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Dictionary


al•tri•cial



Pronunciation: (al-trish'ul), [key]
adj. Zool.(of an animal species)
helpless at birth or hatching and requiring parental care for a period of time (opposed to precocial.)

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

altostratusaltruism
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