The Collaborative International Dictionary of English v.0.48:

Hybrid \Hy"brid\, a.
   1. Produced from the mixture of two genetically distinct
      strains; as, plants of hybrid nature.
      [1913 Webster]

   2. derived by a mixture of characteristics from two
      distinctly different sources; as, a hybrid musical style;
      a hybrid DNA molecule.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Hybrid \Hy"brid\, n. [L. hybrida, hibrida, prob. allied to Gr. ?
   wantonness (as if unbridled, lawless, unnatural), perh. akin
   to Gr. "ype`r over, E. over: cf. F. hybride.]
   1. (Biol.) The offspring of the union of two animals or
      plants derived from recognizably different genetic lines,
      as two distinct species, or two strains of the same
      species with known genetic differences; an animal or plant
      produced from the mixture of two genetic lines. See
      Mongrel.
      [1913 Webster +PJC]

   2. (Philol.) A word composed of elements which belong to
      different languages.
      [Webster 1913 Suppl.]

   3. anything derived by a mixture of components or
      characteristics from two distinctly different sources; as,
      a musical hybrid; a DNA-RNA hybrid.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Mule \Mule\ (m[=u]l), n. [F., a she-mule, L. mula, fem. of
   mulus; cf. Gr. my`klos, mychlo`s. Cf. AS. m[=u]l, fr. L.
   mulus. Cf. Mulatto.]
   1. (Zool.) A hybrid animal; specifically, one generated
      between an ass and a mare. Sometimes the term is applied
      to the offspring of a horse and a she-ass, but that hybrid
      is more properly termed a hinny. See Hinny.
      [1913 Webster]

   Note: Mules are much used as draught animals. They are hardy,
         and proverbial for stubbornness.
         [1913 Webster]

   2. (Bot.) A plant or vegetable produced by impregnating the
      pistil of one species with the pollen or fecundating dust
      of another; -- called also hybrid.
      [1913 Webster]

   3. A very stubborn person.
      [1913 Webster]

   4. A machine, used in factories, for spinning cotton, wool,
      etc., into yarn or thread and winding it into cops; --
      called also jenny and mule-jenny.
      [1913 Webster]

   5. A slipper that has no fitting around the heel.

   Syn: mules, scuff, scuffs.
        [WordNet 1.5]

   Mule armadillo (Zool.), a long-eared armadillo (Tatusia
      hybrida), native of Buenos Ayres; -- called also mulita.
      See Illust. under Armadillo.

   Mule deer (Zool.), a large deer (Cervus macrotis syn.
      Cariacus macrotis) of the Western United States. The
      name refers to its long ears.

   Mule pulley (Mach.), an idle pulley for guiding a belt
      which transmits motion between shafts that are not
      parallel.

   Mule twist, cotton yarn in cops, as spun on a mule; -- in
      distinction from yarn spun on a throstle frame.
      [1913 Webster]

WordNet (r) 3.0 (2006):

hybrid
    adj 1: produced by crossbreeding [syn: hybrid, intercrossed]
    n 1: a word that is composed of parts from different languages
         (e.g., `monolingual' has a Greek prefix and a Latin root)
         [syn: loanblend, loan-blend, hybrid]
    2: a composite of mixed origin; "the vice-presidency is a hybrid
       of administrative and legislative offices"
    3: (genetics) an organism that is the offspring of genetically
       dissimilar parents or stock; especially offspring produced by
       breeding plants or animals of different varieties or breeds
       or species; "a mule is a cross between a horse and a donkey"
       [syn: hybrid, crossbreed, cross]

Moby Thesaurus II by Grady Ward, 1.0:

53 Moby Thesaurus words for "hybrid":
   Cape Colored, Eurasian, bastard, blend, cattalo, citrange,
   combination, composite, compound, contamination, cross, crossbred,
   crossbreed, crossed, griffe, half blood, half-bred, half-breed,
   half-caste, high yellow, hinny, hybrid word, hybridism, interbred,
   ladino, liger, macaronic, macaronicism, mestee, mestiza, mestizo,
   metis, metisse, mixblood, mixed-blood, mixture, mongrel, mulatto,
   mule, mustee, octoroon, plumcot, portmanteau, portmanteau word,
   portmantologism, quadroon, quintroon, sambo, tangelo,
   telescope word, tigon, zebrass, zebrule



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

Hybrid

   A concurrent object-oriented language.

   ["Active Objects in Hybrid", O.M. Nierstrasz, SIGPLAN Notices
   22(12):243-253 (OOPSLA '87) (Dec 1987)].

   (1994-12-07)


The Devil's Dictionary (1881-1906):

HYBRID, n.  A pooled issue.