Moon blindness

Moon blindness
Moon Moon (m[=oo]n), n. [OE. mone, AS. m[=o]na; akin to D. maan, OS. & OHG. m[=a]no, G. mond, Icel. m[=a]ni, Dan. maane, Sw. m[*a]ne, Goth. m[=e]na, Lith. men[*u], L. mensis month, Gr. mh`nh moon, mh`n month, Skr. m[=a]s moon, month; prob. from a root meaning to measure (cf. Skr. m[=a] to measure), from its serving to measure the time. [root]271. Cf. {Mete} to measure, {Menses}, {Monday}, {Month}.] 1. The celestial orb which revolves round the earth; the satellite of the earth; a secondary planet, whose light, borrowed from the sun, is reflected to the earth, and serves to dispel the darkness of night. The diameter of the moon is 2,160 miles, its mean distance from the earth is 240,000 miles, and its mass is one eightieth that of the earth. See {Lunar month}, under {Month}. [1913 Webster]

The crescent moon, the diadem of night. --Cowper. [1913 Webster]

2. A secondary planet, or satellite, revolving about any member of the solar system; as, the moons of Jupiter or Saturn. [1913 Webster]

3. The time occupied by the moon in making one revolution in her orbit; a month. --Shak. [1913 Webster]

4. (Fort.) A crescentlike outwork. See {Half-moon}. [1913 Webster]

5. The deliberately exposed naked buttocks. [slang] [PJC]

{Moon blindness}. (a) (Far.) A kind of ophthalmia liable to recur at intervals of three or four weeks. (b) (Med.) Hemeralopia.

{Moon dial}, a dial used to indicate time by moonlight.

{Moon face}, a round face like a full moon.

{Moon madness}, lunacy. [Poetic]

{Moon month}, a lunar month.

{Moon trefoil} (Bot.), a shrubby species of medic ({Medicago arborea}). See {Medic}.

{Moon year}, a lunar year, consisting of lunar months, being sometimes twelve and sometimes thirteen.

{blue moon}, see {blue moon} in the vocabulary. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • moon blindness — n. 1. night blindness: formerly attributed to the effects of moonlight 2. a disease of horses, of undetermined cause, characterized by recurrent inflammation of the eyes and, eventually, blindness …   English World dictionary

  • moon blindness — n a recurrent inflammation of the eye of the horse called also periodic ophthalmia * * * periodic ophthalmia …   Medical dictionary

  • moon blindness — noun a) A chronic equine inflammatory eye disease. The cavalry messenger dismounted after his moon blindness rendered riding on through the wilderness unsafe. b) The optic condition night blindess: reduced eyesight …   Wiktionary

  • moon blindness — moon′ blind ness n. vet a disease of horses in which the eyes suffer from recurring attacks of inflammation • Etymology: 1710–20 …   From formal English to slang

  • moon blindness — n. loss of vision in horses occurring at regular intervals; nyctalopia, night blindness, abnormally poor eyesight in darkness; night blindness, defect which limits or impairs night vision …   English contemporary dictionary

  • moon blindness — noun 1. inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder • Syn: ↑nyctalopia, ↑night blindness • Hypernyms: ↑visual impairment, ↑visual defect, ↑vision defect, ↑visual disorder, ↑ …   Useful english dictionary

  • moon blindness — Vet. Pathol. a disease of horses in which the eyes suffer from recurring attacks of inflammation, eventually resulting in opacity and blindness. [1710 20] * * * …   Universalium

  • moon blindness — /ˈmun blaɪndnəs/ (say moohn bluyndnuhs) noun a specific, probably non infectious disease of horses, of unknown cause, in which the eyes suffer from recurring attacks of inflammation, and which eventually results in opacity and blindness …  

  • moon blindness — noun Date: circa 1720 a recurrent inflammation of the eye of the horse …   New Collegiate Dictionary

  • moon|eye — «MOON Y», noun. 1. an eye affected with moon blindness. 2. = moon blindness. (Cf. ↑moon blindness) …   Useful english dictionary

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