The Collaborative International Dictionary of English v.0.48:

Fat \Fat\, n. [See Vat, n.]
   1. A large tub, cistern, or vessel; a vat. [Obs.]
      [1913 Webster]

            The fats shall overflow with wine and oil. --Joel
                                                  ii. 24.
      [1913 Webster]

   2. A measure of quantity, differing for different
      commodities. [Obs.] --Hebert.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Fat \Fat\, a. [Compar. Fatter; superl. Fattest.] [AS.
   f[=ae]tt; akin to D. vet, G. fett, feist, Icel. feitr, Sw.
   fet, Dan. fed, and perh. to Gr. pi^dax spring, fountain,
   pidy`ein to gush forth, pi`wn fat, Skr. pi to swell.]
   1. Abounding with fat; as:
      (a) Fleshy; characterized by fatness; plump; corpulent;
          not lean; as, a fat man; a fat ox.
      (b) Oily; greasy; unctuous; rich; -- said of food.
          [1913 Webster]

   2. Exhibiting the qualities of a fat animal; coarse; heavy;
      gross; dull; stupid.
      [1913 Webster]

            Making our western wits fat and mean. --Emerson.
      [1913 Webster]

            Make the heart of this people fat.    --Is. vi. 10.
      [1913 Webster]

   3. Fertile; productive; as, a fat soil; a fat pasture.
      [1913 Webster]

   4. Rich; producing a large income; desirable; as, a fat
      benefice; a fat office; a fat job.
      [1913 Webster]

            Now parson of Troston, a fat living in Suffolk.
                                                  --Carlyle.
      [1913 Webster]

   5. Abounding in riches; affluent; fortunate. [Obs.]
      [1913 Webster]

            Persons grown fat and wealthy by long impostures.
                                                  --Swift.
      [1913 Webster]

   6. (Typog.) Of a character which enables the compositor to
      make large wages; -- said of matter containing blank,
      cuts, or many leads, etc.; as, a fat take; a fat page.
      [1913 Webster]

   Fat lute, a mixture of pipe clay and oil for filling
      joints.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Fat \Fat\, v. i.
   To grow fat, plump, and fleshy.
   [1913 Webster]

         An old ox fats as well, and is as good, as a young one.
                                                  --Mortimer.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Fat \Fat\, n.
   1. (Physiol. Chem.) An oily liquid or greasy substance making
      up the main bulk of the adipose tissue of animals, and
      widely distributed in the seeds of plants. See Adipose
      tissue, under Adipose.
      [1913 Webster]

   Note: Animal fats are composed mainly of three distinct fats,
         tristearin, tripalmitin, and triolein, mixed in varying
         proportions. As olein is liquid at ordinary
         temperatures, while the other two fats are solid, it
         follows that the consistency or hardness of fats
         depends upon the relative proportion of the three
         individual fats. During the life of an animal, the fat
         is mainly in a liquid state in the fat cells, owing to
         the solubility of the two solid fats in the more liquid
         olein at the body temperature. Chemically, fats are
         composed of fatty acid, as stearic, palmitic, oleic,
         etc., united with glyceryl. In butter fat, olein and
         palmitin predominate, mixed with another fat
         characteristic of butter, butyrin. In the vegetable
         kingdom many other fats or glycerides are to be found,
         as myristin from nutmegs, a glyceride of lauric acid in
         the fat of the bay tree, etc.
         [1913 Webster]

   2. The best or richest productions; the best part; as, to
      live on the fat of the land.
      [1913 Webster]

   3. (Typog.) Work. containing much blank, or its equivalent,
      and, therefore, profitable to the compositor.
      [1913 Webster]

   Fat acid. (Chem.) See Sebacic acid, under Sebacic.

   Fat series, Fatty series (Chem.), the series of the
      paraffine hydrocarbons and their derivatives; the marsh
      gas or methane series.

   Natural fats (Chem.), the group of oily substances of
      natural occurrence, as butter, lard, tallow, etc., as
      distinguished from certain fatlike substance of artificial
      production, as paraffin. Most natural fats are essentially
      mixtures of triglycerides of fatty acids.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Fat \Fat\, v. t. [imp. & p. p. Fatted; p. pr. & vb. n.
   atting.] [OE. fatten, AS. f[=ae]ttian. See Fat, a., and
   cf. Fatten.]
   To make fat; to fatten; to make plump and fleshy with
   abundant food; as, to fat fowls or sheep.
   [1913 Webster]

         We fat all creatures else to fat us.     --Shak.
   [1913 Webster]

WordNet (r) 3.0 (2006):

fat
    adj 1: having an (over)abundance of flesh; "he hadn't remembered
           how fat she was" [ant: lean, thin]
    2: having a relatively large diameter; "a fat rope"
    3: containing or composed of fat; "fatty food"; "fat tissue"
       [syn: fatty, fat] [ant: fat-free, fatless, nonfat]
    4: lucrative; "a juicy contract"; "a nice fat job" [syn: fat,
       juicy]
    5: marked by great fruitfulness; "fertile farmland"; "a fat
       land"; "a productive vineyard"; "rich soil" [syn: fat,
       fertile, productive, rich]
    n 1: a soft greasy substance occurring in organic tissue and
         consisting of a mixture of lipids (mostly triglycerides);
         "pizza has too much fat"
    2: a kind of body tissue containing stored fat that serves as a
       source of energy; it also cushions and insulates vital
       organs; "fatty tissue protected them from the severe cold"
       [syn: adipose tissue, fat, fatty tissue]
    3: excess bodily weight; "she disliked fatness in herself as
       well as in others" [syn: fatness, fat, blubber,
       avoirdupois] [ant: leanness, spareness, thinness]
    v 1: make fat or plump; "We will plump out that poor starving
         child" [syn: fatten, fat, flesh out, fill out,
         plump, plump out, fatten out, fatten up]

Moby Thesaurus II by Grady Ward, 1.0:

394 Moby Thesaurus words for "fat":
   Boeotian, Haliver Oil, abounding, abounding in riches, abundant,
   adipose, adipose tissue, advantageous, affluent, all-sufficing,
   ample, animal oil, animal oils, aplenty, asinine, balmy, banausic,
   become overweight, bedizenment, beef tallow, beef-brained,
   beef-witted, beefy, big, big-bellied, big-rich, bloated, blockish,
   blocky, blooming, blossoming, blown up, blowzy, blubber, blubbery,
   bone oil, booming, bosomy, bottlenose oil, bottomless, bounteous,
   bountiful, bovine, brawny, breadwinning, broad, broad-bodied,
   bulky, bull, bullnecked, burly, butter, butterfat, buttery,
   butyraceous, buxom, cerate, champion, choice, cholesterol, chosen,
   chrismal, chrismatory, chubby, chumpish, chunky, clear, cloddish,
   coarse, cod-liver oil, comfortable, consonant, copious, corpulent,
   cowish, crass, cream, deep, dense, diffuse, dilated,
   disgustingly rich, distended, doegling oil, doltish, dripping,
   drippings, dropsical, drying oil, dullard, dumb, dumpy, duncical,
   duncish, duplication, duplication of effort, edematous, effuse,
   elect, elite, embellishment, enchymatous, engross, epidemic,
   essential oil, ester, exhaustless, expletive, extravagance,
   extravagant, exuberant, fair, fatten, fattish, fatty, fatty oil,
   featherbedding, fertile, filling, fish oil, fixed oil, flatulent,
   fleshy, flourishing, flower, flowering, flush, frightfully rich,
   frill, frills, frippery, fruiting, full, full-bodied, gain weight,
   gainful, galore, gassy, gather flesh, generous, ghee, gingerbread,
   glyceride, going strong, goose grease, grease, greasy, great,
   gross, halcyon, heavy, heavyset, heavyweight, hefty, hippy, husky,
   hydrogenated fat, imposing, in full swing, in funds, in good case,
   in plenty, in quantity, in the money, incrassate, independent,
   independently rich, independently wealthy, ineducable,
   inexhaustible, inflated, klutzy, lanolin, lard, lard oil,
   lardaceous, lardy, lavish, leaden, liberal, lipid, lipin, lipoid,
   lipoma, loaded, lucrative, lumpish, lusty, luxuriant, luxurious,
   luxury, made of money, many, margarine, massive, massy, maximal,
   meaty, mineral oil, moneyed, moneymaking, much, mucoid,
   mutton tallow, needlessness, negligible, nonesuch, nonpareil,
   numerous, oafish, obese, off, oil, oily, oleaginous, oleic, oleo,
   oleomargarine, oleum, oofy, opaque, optimum, opulent,
   ornamentation, orotund, outside, overabundance, overadornment,
   overblown, overflow, overflowing, overkill, overlap, overmuch,
   overplus, overweight, padding, palmy, paragon, paunchy, paying,
   payroll padding, pick, pinguefy, piping, plenitudinous, plenteous,
   plentiful, plenty, pleonasm, plethora, plethoric, plump, podgy,
   polyunsaturated fat, ponderous, porpoise oil, portly, potbellied,
   prevailing, prevalent, pride, prime, prize, prodigal, productive,
   profitable, profuse, profusive, prolixity, prospering,
   provided for, pudgy, puffed up, puffy, pug, pugged, pursy,
   put on weight, queen, quintessence, rampant, redundance,
   redundancy, remunerative, replete, resounding, retrousse, rich,
   rich as Croesus, rife, ringing, riotous, rolling in money,
   roly-poly, rosy, rotund, round, running over, seal oil, sebaceous,
   sebum, select, shortening, sleek, slender, slick, slight, slim,
   slippery, small, smooth, snub-nosed, soapy, sonorous, sottish,
   square, squat, squattish, squatty, stalwart, steroid, stocky,
   stout, strapping, stubbed, stubby, stumpy, stupid, suet, suety,
   superabundant, superfluity, superfluousness, superlative, surfeit,
   surplus, swelled, swollen, tallow, tallowy, tautology, teeming,
   the best, the best ever, the tops, the very best, thick,
   thick-bodied, thickset, three-dimensional, thriving, top,
   top-heavy, tubby, tumid, turgid, turned-up, unctuous, unguent,
   unguentary, unguentous, unnecessariness, unsaturated fat,
   unteachable, vegetable oil, ventose, verbosity, vibrant, vigorous,
   viscous, volatile oil, wallowing in wealth, warm, wealthy, weighty,
   well provided for, well-fed, well-fixed, well-found,
   well-furnished, well-heeled, well-off, well-paying, well-provided,
   well-stocked, well-to-do, whale oil, wholesale, wide, windy,
   wool fat, worthwhile, wrongheaded



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

FAT
       File Allocation Table (DOS)


The Free On-line Dictionary of Computing (30 December 2018):

File Allocation Table
FAT
FAT32

    (FAT) The component of an MS-DOS or Windows
   95 file system which describes the files, directories,
   and free space on a hard disk or floppy disk.

   A disk is divided into partitions.  Under the FAT file
   system each partition is divided into clusters, each of
   which can be one or more sectors, depending on the size of
   the partition.  Each cluster is either allocated to a file or
   directory or it is free (unused).  A directory lists the name,
   size, modification time and starting cluster of each file or
   subdirectory it contains.

   At the start of the partition is a table (the FAT) with one
   entry for each cluster.  Each entry gives the number of the
   next cluster in the same file or a special value for "not
   allocated" or a special value for "this is the last cluster in
   the chain".  The first few clusters after the FAT contain the
   root directory.

   The FAT file system was originally created for the CP/M[?]
   operating system where files were catalogued using 8-bit
   addressing.  MS DOS's FAT allows only 8.3 filenames.

   With the introduction of MS-DOS 4 an incompatible 16-bit FAT
   (FAT16) with 32-kilobyte clusters was introduced that
   allowed partitions of up to 2 gigabytes.

   Microsoft later created FAT32 to support partitions larger
   than two gigabytes and pathnames greater that 256
   characters.  It also allows more efficient use of disk space
   since clusters are four kilobytes rather than 32 kilobytes.
   FAT32 was first available in OEM Service Release 2 of
   Windows 95 in 1996.  It is not fully backward compatible
   with the 16-bit and 8-bit FATs.

   IDG article

(http://idg.net/idgframes/english/content.cgi?vc=docid_9-62525.html).
   (http://home.c2i.net/tkjoerne/os/fat.htm).
   (http://teleport.com/~brainy/).
   (http://209.67.75.168/hardware/fatgen.htm).
   (http://support.microsoft.com/support/kb/articles/q154/9/97.asp).

   Compare: NTFS.

   [How big is a FAT?  Is the term used outside MS DOS?  How long
   is a FAT16 filename?]

   (2000-02-05)


Easton's 1897 Bible Dictionary:

Fat
   (Heb. heleb) denotes the richest part of the animal, or the
   fattest of the flock, in the account of Abel's sacrifice (Gen.
   4:4). It sometimes denotes the best of any production (Gen.
   45:18; Num. 18:12; Ps. 81:16; 147:47). The fat of sacrifices was
   to be burned (Lev. 3:9-11; 4:8; 7:3; 8:25; Num. 18:17. Comp. Ex.
   29:13-22; Lev. 3:3-5).

     It is used figuratively for a dull, stupid state of mind (Ps
   17:10).

     In Joel 2:24 the word is equivalent to "vat," a vessel. The
   hebrew word here thus rendered is elsewhere rendered "wine-fat"
   and "press-fat" (Hag. 2:16; Isa. 63:2).