1.  vision(n = noun.cognition) - a vivid mental image; "he had a vision of his own death"
is a kind of imagery, imagination, imaging, mental imagery
has particulars: prevision, retrovision
Derived form adjective visionary₁

2.  vision(n = noun.cognition) sight, visual modality, visual sense - the ability to see; the visual faculty;
is a kind of modality, sense modality, sensory system, exteroception
has particulars: stigmatism, achromatic vision, acuity, sharp-sightedness, visual acuity, binocular vision, central vision, chromatic vision, color vision, trichromacy, distance vision, eyesight, seeing, sightedness, monocular vision, near vision, night-sight, night vision, scotopic vision, twilight vision, daylight vision, photopic vision, peripheral vision

3.  vision(n = noun.cognition) visual sensation - the perceptual experience of seeing; "the runners emerged from the trees into his clear vision"; "he had a visual sensation of intense light"
is a kind of aesthesis, esthesis, sensation, sense datum, sense experience, sense impression

4.  vision(n = noun.cognition) imagination, imaginativeness - the formation of a mental image of something that is not perceived as real and is not present to the senses; "popular imagination created a world of demons"; "imagination reveals what the world could be"
is a kind of creative thinking, creativeness, creativity
has particulars: fictitious place, imaginary place, mythical place, fancy, fantasy, phantasy, dream, dreaming, imaginary being, imaginary creature

5.  vision(n = noun.event) - a religious or mystical experience of a supernatural appearance; "he had a vision of the Virgin Mary"
is a kind of experience

1.  The act of seeing external objects; actual sight. [1913 Webster]
"Faith here is turned into vision there." [1913 Webster]

2.  The faculty of seeing; sight; one of the five senses, by which colors and the physical qualities of external objects are appreciated as a result of the stimulating action of light on the sensitive retina, an expansion of the optic nerve. [1913 Webster]

3.  That which is seen; an object of sight. Shak. [1913 Webster]

4.  Especially, that which is seen otherwise than by the ordinary sight, or the rational eye; a supernatural, prophetic, or imaginary sight; an apparition; a phantom; a specter; as, the visions of Isaiah. [1913 Webster]
"The baseless fabric of this vision." [1913 Webster]
"No dreams, but visions strange." [1913 Webster]

5.  Hence, something unreal or imaginary; a creation of fancy. Locke. [1913 Webster]

   To see in a vision; to dream. [1913 Webster]
"For them no visioned terrors daunt,
Their nights no fancied specters haunt." [1913 Webster]

vision, n. & v.
--n.
1 the act or faculty of seeing, sight (has impaired his vision).
2 a a thing or person seen in a dream or trance. b a supernatural or prophetic apparition.
3 a thing or idea perceived vividly in the imagination (the romantic visions of youth; had visions of warm sandy beaches).
4 imaginative insight.
5 statesmanlike foresight; sagacity in planning.
6 a person etc. of unusual beauty.
7 what is seen on a television screen; television images collectively.
--v.tr. see or present in or as in a vision.

Idiom:
field of vision all that comes into view when the eyes are turned in some direction. vision-mixer a person whose job is to switch from one image to another in television broadcasting or recording.

Derivative:
visional adj. visionless adj.

Etymology:
ME f. OF f. L visio -onis (as VISIBLE)

N  demon, daemon, demonry, demonology, evil genius, fiend, familiar, daeva, devil, bad spirit, unclean spirit, cacodemon, incubus, Eblis, shaitan, succubus, succuba, Frankenstein's monster, Titan, Shedim, Mephistopheles, Asmodeus, Moloch, Belial, Ahriman, fury, harpy, Friar Rush, vampire, ghoul, afreet, barghest, Loki, ogre, ogress, gnome, gin, jinn, imp, deev, lamia, bogie, bogeyman, bogle, nis, kobold, flibbertigibbet, fairy, brownie, pixy, elf, dwarf, urchin, Puck, Robin Goodfellow, leprechaun, Cluricaune, troll, dwerger, sprite, ouphe, bad fairy, nix, nixie, pigwidgeon, will-o'-the wisp, ghost, revenant, specter, apparition, spirit, shade, shadow, vision, hobglobin, goblin, orc, wraith, spook, boggart, banshee, loup-garou, lemures, evil eye, merman, mermaid, merfolk, siren, satyr, faun, manito, manitou, manitu, possession, demonic possession, diabolic possession, insanity, Maxwell's demon, demoniac, demonic, demonical, impish, demoniacal, fiendish, fiend-like, supernatural, weird, uncanny, unearthly, spectral, ghostly, ghost-like, elfin, elvin, elfish, elflike, haunted, pokerish, possessed, possessed by a devil, possessed by a demon, demonically.

N  vision, sight, optics, eyesight, view, look, espial, glance, ken, coup d'oeil, glimpse, glint, peep, gaze, stare, leer, perlustration, contemplation, conspection, conspectuity, regard, survey, introspection, reconnaissance, speculation, watch, espionage, espionnage, autopsy, ocular inspection, ocular demonstration, sight-seeing, point of view, gazebo, loophole, belvedere, watchtower, field of view, theater, amphitheater, arena, vista, horizon, commanding view, bird's eye view, periscope, visual organ, organ of vision, eye, naked eye, unassisted eye, retina, pupil, iris, cornea, white, optics, orbs, saucer eyes, goggle eyes, gooseberry eyes, short sight, clear sight, sharp sight, quick sight, eagle sight, piercing sight, penetrating sight, clear glance, sharp glance, quick glance, eagle glance, piercing glance, penetrating glance, clear eye, sharp eye, quick eye, eagle eye, piercing eye, penetrating eye, perspicacity, discernment, catopsis, eagle, hawk, cat, lynx, Argus, evil eye, basilisk, cockatrice, seeing, visual, ocular, optic, optical, ophthalmic, clear-eyesighted, eagle-eyed, hawk-eyed, lynx-eyed, keen- eyed, Argus-eyed, visible, visibly, in sight of, with one's eyes open at sight, at first sight, at a glance, at the first blush, prima facie, Int, look!, the scales falling from one's eyes, an eye like Mars to threaten or command, her eyes are homes of silent prayer, looking before and after, thy rapt soul sitting in thine eyes.

N  dimsightedness, dim sight, dull sight half sight, short sight, near sight, long sight, double sight, astigmatic sight, failing sight, dimsightedness, purblindness, lippitude, myopia, presbyopia, confusion of vision, astigmatism, color blindness, chromato pseudo blepsis, Daltonism, nyctalopia, strabismus, strabism, squint, blearedness, day blindness, hemeralopia, nystagmus, xanthocyanopia, xanthopsia, cast in the eye, swivel eye, goggle-eyes, obliquity of vision, winking, nictitation, blinkard, albino, dizziness, swimming, scotomy, cataract, ophthalmia, blinker, screen, deceptio visus, refraction, distortion, illusion, false light, anamorphosis, virtual image, spectrum, mirage, looming, phasma, phantasm, phantasma, phantom, vision, specter, apparition, ghost, ignis fatuus, specter of the Brocken, magic mirror, magic lantern, mirror lens, dim-sighted, myopic, presbyopic, astigmatic, moon-eyed, mope-eyed, blear-eyed, goggle-eyed, gooseberry-eyed, one-eyed, blind of one eye, monoculous, half-blind, purblind, cock-eyed, dim-eyed, mole- eyed, dichroic, blind as a bat, winking.

N  imagination, originality, invention, fancy, inspiration, verve, warm imagination, heated imagination, excited imagination, sanguine imagination, ardent imagination, fiery imagination, boiling imagination, wild imagination, bold imagination, daring imagination, playful imagination, lively imagination, fertile imagination, fancy, mind's eye, such stuff as dreams are made of, ideality, idealism, romanticism, utopianism, castle-building, dreaming, phrensy, frenzy, ecstasy, extasy, calenture, reverie, trance, day dream, golden dream, somnambulism, conception, Vorstellung, excogitation, a fine frenzy, cloudland, dreamland, flight of fancy, fumes of fancy, thick coming fancies, creation of the brain, coinage of the brain, imagery, conceit, maggot, figment, myth, dream, vision, shadow, chimera, phantasm, phantasy, fantasy, fancy, whim, whimsey, whimsy, vagary, rhapsody, romance, gest, geste, extravaganza, air drawn dagger, bugbear, nightmare, flying Dutchman, great sea serpent, man in the moon, castle in the air, pipe dream, pie-in-the-sky, chateau en Espagne, Utopia, Atlantis, happy valley, millennium, fairyland, land of Prester John, kindgom of Micomicon, work of fiction, Arabian nights, le pot au lait, dream of Alnashar, illusion, phantom, Fata Morgana, vapor, stretch of the imagination, mythogenesis, idealist, romanticist, visionary, mopus, romancer, dreamer, somnambulist, rhapsodist, castle-buildier, fanciful projector, imagined, ben trovato, air drawn, airbuilt, imagining, imaginative, original, inventive, creative, fertile, romantic, high flown, flighty, extravagant, fanatic, enthusiastic, unrealistic, Utopian, Quixotic, ideal, unreal, in the clouds, in nubibus, unsubsantial, illusory, fabulous, legendary, mythical, mythic, mythological, chimerical, imaginary, visionary, notional, fancy, fanciful, fantastic, fantastical, whimsical, fairy, fairy-like, gestic, a change came o'er the spirit of my dream, aegri somnia vana, dolphinum appingit sylvis in fluctibus aprum, fancy light from fancy caught, imagination rules the world, l'imagination gallope, le jugement ne va que le pas, musaeo contingens cuncta lepore, tous songes sont mensonges, Wahrheil und Dichtung, DIVISION II COMMUNICATION OF IDEAS.

achromatic vision, binocular vision, central vision, chromatic vision, color vision, color vision deficiency, colour vision deficiency, daylight vision, distance vision, double vision, field of vision, foveal vision, line of vision, monochromatic vision, monocular vision, near vision, night vision, peripheral vision, photopic vision, scotopic vision, stereoscopic vision, tunnel vision, twilight vision, vision defect