| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024Down's syn•drome /ˈdaʊnz ˈsɪndroʊm/USA pronunciation n. [uncountable]- PathologyAlso, Down syndrome. a condition from birth of mental retardation and the development of a flat forehead.
WordReference Random House Unabridged Dictionary of American English © 2024Down's′ syn′drome, [Pathol.]- PathologySee Down syndrome.
Collins Concise English Dictionary © HarperCollins Publishers:: Down's syndrome, US Down syndrome n - a condition caused by the presence of an extra copy of chromosome 21 resulting in learning difficulties and physical differences, such as shorter stature
Former name: offensive mongolism
Technical name: trisomy 21 - (as modifier): a Down's syndrome baby
Etymology: 19th Century: after John Langdon-Down (1828–96), English physicianUSAGE
Although the condition was once generally known as mongolism, this term has been considered offensive since the early 1960s. The terms Down's syndrome or (US) Down syndrom are now preferred. |