cataract

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++

Related topics: Illness & disability, Nature

cat·a·ract /ˈkætərækt/ noun [countable]  1. MIa medical condition that causes the lens of your eye to become white, so that you slowly lose your sight 白内障2. literaryDN a large waterfall 大瀑布

Examples from the Corpus

cataract• Locust Abortion Technician was a glorious mire, a glistening palace of ordure, a cataract of dysentery.• Some conditions such as cataract can be operated on.• Hydrogel contact lenses, for example, can be used for the controlled release of antibiotics to patients waiting for cataract surgery.• As such it became almost as famous as the great cataract itself for which the Porter family assumed a proprietary interest.• People who need cataract surgery are taken by bus to the nearest hospital for surgery, and returned home the next day.• He studied the hydraulics of the cataract and the sculptural look of the cliffs.• Church had managed for the first time to capture the awesome power of the cataract.• Here the current is so strong that the shape of the cataract is constantly changing.Origin cataract 1. (1400-1500) Latin cataracta “waterfall, castle gate that drops from above”, from Greek, from katarassein “to strike down”, from kata- ( → CATACLYSM) + arassein “to strike”; 2. because a cataract blocks sight like a gate coming down

cat·a·ract nounChineseSyllable  

a your Corpus medical lens the causes that eye of condition

cataract
cat‧a‧ract /ˈkætərækt/ noun [countable]1. a medical condition that causes the lens of your eye to become white, so that you slowly lose your sight
2. literary a large waterfall

cat·ar·actBrE /ˈkætərækt/ 🔊NAmE /ˈkætərækt/ 🔊 nouna medical condition that affects the lens of the eye and causes a gradual loss of sight 白内障(literary) a large steep waterfall 大瀑布