英语词汇“cataract”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

cat·a·ract

(kătə-răkt′)

1. A large or high waterfall.

2. A great downpour; a deluge.

3. Medicine Opacity of the lens or capsule of the eye, causing impairment of vision or blindness.

[Middle English cataracte, from Old French, from Latin cataracta, from Greek katarraktēs, kataraktēs, downrush, waterfall, portcullis, probably from katarassein, to dash down (kat-, kata-, cata- + arassein, to strike). Sense 3, from a comparison to a portcullis or other falling impediment or covering.]

cat′a·ractous (-răktəs) adj.

单词	cataract
释义	cat·a·ract (kătə-răkt′) n. 1. A large or high waterfall. 2. A great downpour; a deluge. 3. Medicine Opacity of the lens or capsule of the eye, causing impairment of vision or blindness. [Middle English cataracte, from Old French, from Latin cataracta, from Greek katarraktēs, kataraktēs, downrush, waterfall, portcullis, probably from katarassein, to dash down (kat-, kata-, cata- + arassein, to strike). Sense 3, from a comparison to a portcullis or other falling impediment or covering.] cat′a·ractous (-răktəs) adj.
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