al·tri·cial

[al-trish-uhl]
adjective Zoology, (of an animal species)
helpless at birth or hatching and requiring parental care for a period of time ( opposed to precocial )

Origin:
1870–75; < Latin altrīc-, stem of altrīx wet nurse, nourisher (al(ere) to nourish (cf. aliment) + -trīx -trix) + -al1

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World English Dictionary
altricial (ælˈtrɪʃəl) [Click for IPA pronunciation guide]
 
adj
1.  (of the young of some species of birds after hatching) naked, blind, and dependent on the parents for food
 
n
2.  an altricial bird, such as a pigeon
 
[C19: from New Latin altriciālis, from Latin altrix a nurse, from alere to nourish]

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Altricial is always a great word to know.
So is callithumpian. Does it mean:
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
American Heritage
Science Dictionary
altricial   (āl-trĭsh'əl)  Pronunciation Key 
Born or hatched in a helpless condition requiring prolonged parental care, as by being naked, blind, or unable to move about. Nesting birds, monotremes, marsupials, and carnivores have altricial young. Compare precocial.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Nestlings are altricial and hatch asynchronously over several days.
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