Zoology 【动】
1
- (of a young bird or other animal) hatched or born in an advanced state and able to feed itself almost immediately. Often contrasted with ALTRICAL.（雏鸟等）早成性的, 早熟的。亦称NIDIFUGOUS. 常与ALTRICIAL相对。
1.1
- (of a particular species) having such young（某物种）有早成性后代的。
- a precocial bird早成鸟。
词源
late 19th cent.: from modern Latin Praecoces （the name of a former division of birds， plural of Latin praecox 'mature before its time'）+-IAL.