moon blindness
 夜盲


 moon blindness 名詞
 月光盲


 Moon n.
 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.
    The crescent moon, the diadem of night.   --Cowper.
 2. A secondary planet, or satellite, revolving about any member of the solar system; as, the moons of Jupiter or Saturn.
 3. The time occupied by the moon in making one revolution in her orbit; a month; as, it's been many moons since I last visited Washington.
 4. Fort. A crescentlike outwork. See Half-moon.
 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.
 many moons, a long time.


 moon blindness
      n 1: inability to see clearly in dim light; due to a deficiency
           of vitamin A or to a retinal disorder [syn: nyctalopia,
            night blindness]
      2: recurrent eye inflammation in horses; sometimes resulting in
         blindness [syn: mooneye]