The Collaborative International Dictionary of English v.0.48:

Prophecy \Proph"e*cy\, n.; pl. Prophecies, [OE. prophecie, OF.
   profecie, F. proph['e]tie, L. prophetia, fr. Gr. ?, fr. ? to
   be an interpreter of the gods, to prophesy, fr. ? prophet.
   See Prophet.]
   1. A declaration of something to come; a foretelling; a
      prediction; esp., an inspired foretelling.
      [1913 Webster]

            He hearkens after prophecies and dreams. --Shak.
      [1913 Webster]

            Prophecy came not in old time by the will of man.
                                                  --2. Pet. i.
                                                  21.
      [1913 Webster]

   2. (Script.) A book of prophecies; a history; as, the
      prophecy of Ahijah. --2 Chron. ix. 29.
      [1913 Webster]

   3. Public interpretation of Scripture; preaching; exhortation
      or instruction.
      [1913 Webster]

WordNet (r) 3.0 (2006):

prophecy
    n 1: knowledge of the future (usually said to be obtained from a
         divine source) [syn: prophecy, prognostication,
         vaticination]
    2: a prediction uttered under divine inspiration [syn:
       prophecy, divination]

Moby Thesaurus II by Grady Ward, 1.0:

80 Moby Thesaurus words for "prophecy":
   actuarial prediction, afflatus, aftertime, afteryears, apocalypse,
   augury, by-and-by, cast, course ahead, crystal ball, determinism,
   direct communication, distant future, divination,
   divine inspiration, divine revelation, epiphany, eventuality,
   expectation, foreboding, forecast, forecasting, foreshowing,
   foresight, foretelling, forward look, future, future tense,
   futurism, futurity, guesswork, hereafter, immediate future,
   immediate prospect, imminence, improbability, inspiration,
   mystical experience, mysticism, near future, offing, omen, oracle,
   outlook, posteriority, prediction, prefiguration, prefigurement,
   prefiguring, presage, presaging, presentiment, preshowing,
   presignifying, prognosis, prognostication, project, promise,
   prophesying, prospect, prospectus, revelation, soothsay,
   soothsaying, speculation, statistical prediction, the future,
   the morrow, the sweet by-and-by, theophania, theophany,
   theopneustia, theopneusty, time ahead, time just ahead,
   time to come, tomorrow, vaticination, vision, weird



Easton's 1897 Bible Dictionary:

Prophecy
   or prediction, was one of the functions of the prophet. It has
   been defined as a "miracle of knowledge, a declaration or
   description or representation of something future, beyond the
   power of human sagacity to foresee, discern, or conjecture."
   (See PROPHET.)

     The great prediction which runs like a golden thread through
   the whole contents of the Old Testament is that regarding the
   coming and work of the Messiah; and the great use of prophecy
   was to perpetuate faith in his coming, and to prepare the world
   for that event. But there are many subordinate and intermediate
   prophecies also which hold an important place in the great chain
   of events which illustrate the sovereignty and all-wise
   overruling providence of God.

     Then there are many prophecies regarding the Jewish nation,
   its founder Abraham (Gen. 12:1-3; 13:16; 15:5; 17:2, 4-6, etc.),
   and his posterity, Isaac and Jacob and their descendants (12:7;
   13:14, 15, 17; 15:18-21; Ex. 3:8, 17), which have all been
   fulfilled. The twenty-eighth chapter of Deuteronomy contains a
   series of predictions which are even now in the present day
   being fulfilled. In the writings of the prophets Isaiah
   (2:18-21), Jeremiah (27:3-7; 29:11-14), Ezekiel (5:12; 8),
   Daniel (8; 9:26, 27), Hosea (9:17), there are also many
   prophecies regarding the events which were to befall that
   people.

     There is in like manner a large number of prophecies relating
   to those nations with which the Jews came into contact, as Tyre
   (Ezek. 26:3-5, 14-21), Egypt (Ezek. 29:10, 15; 30:6, 12, 13),
   Ethiopia (Nahum 3:8-10), Nineveh (Nahum 1:10; 2:8-13; 3:17-19),
   Babylon (Isa. 13:4; Jer. 51:7; Isa. 44:27; Jer. 50:38; 51:36,
   39, 57), the land of the Philistines (Jer. 47:4-7; Ezek.
   25:15-17; Amos 1:6-8; Zeph. 2:4-7; Zech. 9:5-8), and of the four
   great monarchies (Dan. 2:39, 40; 7:17-24; 8:9).

     But the great body of Old Testament prophecy relates directly
   to the advent of the Messiah, beginning with Gen. 3:15, the
   first great promise, and extending in ever-increasing fulness
   and clearness all through to the very close of the canon. The
   Messianic prophecies are too numerous to be quoted. "To him gave
   all the prophets witness." (Comp. Micah 5:2; Hag. 2:6-9; Isa.
   7:14; 9:6, 7; 11:1, 2; 53; 60:10, 13; Ps. 16:11; 68:18.)

     Many predictions also were delivered by Jesus and his
   apostles. Those of Christ were very numerous. (Comp. Matt.
   10:23:24; 11:23; 19:28; 21:43, 44; 24; 25:31-46; 26:17-35, 46,
   64; Mark 9:1; 10:30; 13; 11:1-6, 14; 14:12-31, 42, 62; 16:17,
   etc.)


The Devil's Dictionary (1881-1906):

PROPHECY, n.  The art and practice of selling one's credibility for
future delivery.