- (zoology) Helpless at birth (of young animals); or having young which are helpless at birth.
2001, Gonyou, Keeling & Keeling, Social Behaviour in Farm Animals, CABI Publishing, published 2001, page 63:
- Altricial young are typical among carnivores, which might be expected to be hampered in their hunting behaviour if the pregnant mother has to carry its young for a long period.
- 2011, Steven Pinker, The Better Angels of Our Nature, Penguin 2012, p. 281:
- First, humans are altricial, with immature newborns and a long childhood.
having young which are helpless at birth
- (zoology, of a species) altricial (having young which are helpless at birth)