| 单词 | senile |
| 释义 | senile /see"nuyl, -nil, sen"uyl/, adj. 1. showing a decline or deterioration of physical strength or mental functioning, esp. short-term memory and alertness, as a result of old age or disease. 2. of or belonging to old age or aged persons; gerontological; geriatric. 3. Physical Geog. (of topographical features) having been reduced by erosion to a featureless plain that stands everywhere at base level. Cf. peneplain. n. 4. a senile person. [1655-65; < L senilis old, equiv. to sen(ex) old man (akin to SENIOR) + -ilis -ILE] |
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