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

cataract

/ˈkatərakt

noun

1A large waterfall: the river descends in a succession of spectacular cataracts...

A cataract is also a waterfall - a glorious force that washes away so much you're glad to be rid of, perhaps with some cleansing tears as a finale.
The Old Cataract Hotel in Aswan, built in 1899, stands at the site of the first cataract, or waterfall, of the Nile.
After a wet spell, the cataract is more spectacular, but the penalty is the state of the ground.

Synonyms

waterfall, cascade, falls, rapids, white water;

torrent;

downpour, shower;

Northern English force

Scottish archaic linn

1.1A sudden rush of water; a downpour: the rain enveloped us in a deafening cataract...

The current weather report is for, basically, the sky to collapse, typhoons, cataracts and hurricanes, spouting till they have drench'd our steeples, etc.

2A medical condition in which the lens of the eye becomes progressively opaque, resulting in blurred vision: she had cataracts in both eyes...

The most common causes of visual impairment in the elderly include presbyopia, cataracts, glaucoma, diabetic retinopathy and age-related macular degeneration.
Chronic obstructive pulmonary disease included asthma and chronic bronchitis, and eye disease included cataracts and glaucoma.
This increased risk of falling may be the result of changes that come with aging plus other medical conditions, such as arthritis, cataracts, or hip surgery.

Synonyms

opacity, opaqueness

Origin

Late Middle English: from Latin cataracta 'waterfall, floodgate', also 'portcullis' (medical sense 2 probably being a figurative use of this), from Greek kataraktēs 'down-rushing', from katarassein, from kata- 'down' + arassein 'strike, smash'.

Latin cataracta (from Greek kataraktes, ‘rushing down’) meant both ‘waterfall or floodgate’ and ‘portcullis’. The first meaning led to the ‘large waterfall’ sense of the English word cataract, and the second is probably behind the medical sense describing the clouding of the lens of the eye. A person's vision is blocked by this condition as if a portcullis had been lowered over the eye. Other words in English containing kata ‘down’ include cataclysm (early 17th century) from kluzein ‘to wash’; catapult (late 16th century) from pallein ‘hurl’; and catastrophe (mid 16th century) from strophē ‘turning’.

单词	cataract
释义	cataract /ˈkatərakt / noun 1A large waterfall: the river descends in a succession of spectacular cataracts... A cataract is also a waterfall - a glorious force that washes away so much you're glad to be rid of, perhaps with some cleansing tears as a finale. The Old Cataract Hotel in Aswan, built in 1899, stands at the site of the first cataract, or waterfall, of the Nile. After a wet spell, the cataract is more spectacular, but the penalty is the state of the ground. Synonyms waterfall, cascade, falls, rapids, white water; torrent; downpour, shower; Northern English force Scottish archaic linn 1.1A sudden rush of water; a downpour: the rain enveloped us in a deafening cataract... The current weather report is for, basically, the sky to collapse, typhoons, cataracts and hurricanes, spouting till they have drench'd our steeples, etc. 2A medical condition in which the lens of the eye becomes progressively opaque, resulting in blurred vision: she had cataracts in both eyes... The most common causes of visual impairment in the elderly include presbyopia, cataracts, glaucoma, diabetic retinopathy and age-related macular degeneration. Chronic obstructive pulmonary disease included asthma and chronic bronchitis, and eye disease included cataracts and glaucoma. This increased risk of falling may be the result of changes that come with aging plus other medical conditions, such as arthritis, cataracts, or hip surgery. Synonyms opacity, opaqueness Origin Late Middle English: from Latin cataracta 'waterfall, floodgate', also 'portcullis' (medical sense 2 probably being a figurative use of this), from Greek kataraktēs 'down-rushing', from katarassein, from kata- 'down' + arassein 'strike, smash'. Latin cataracta (from Greek kataraktes, ‘rushing down’) meant both ‘waterfall or floodgate’ and ‘portcullis’. The first meaning led to the ‘large waterfall’ sense of the English word cataract, and the second is probably behind the medical sense describing the clouding of the lens of the eye. A person's vision is blocked by this condition as if a portcullis had been lowered over the eye. Other words in English containing kata ‘down’ include cataclysm (early 17th century) from kluzein ‘to wash’; catapult (late 16th century) from pallein ‘hurl’; and catastrophe (mid 16th century) from strophē ‘turning’.
随便看	money king money launderer money laundering moneylender moneylending moneyless money-loser money-losing money machine moneymaker moneymaking money man money management money manager money market money market fund money mart money matters money merchant money-monger money-mongering money musk moneyness moneyocracy money of account