lanugo

[luh-noo-goh, -nyoo-]

la·nu·go

[luh-noo-goh, -nyoo-]
noun, plural la·nu·gos. Biology.
a coat of delicate, downy hairs, especially that with which the human fetus or a newborn infant is covered.

Origin:
1670–80; < Latin lānūgō wooliness, down, derivative of lāna wool
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Lanugo is always a great word to know.
So is analogous. Does it mean:
corresponding in function, but not evolved from corresponding organs, as the wings of a bee and those of a hummingbird
variation in traits such as body weight or height in which a series of types are distributed on a continuum, not grouped into discrete categories
Collins
World English Dictionary
lanugo (ləˈnjuːɡəʊ)
 
n , pl -gos
a layer of fine hairs, esp the covering of the human fetus before birth
 
[C17: from Latin: down, from lāna wool]
 
lanuginous
 
adj
 
la'nuginose
 
adj
 
la'nuginousness
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary

lanugo la·nu·go (lə-n&oomacr;'gō, -ny&oomacr;'-)
n. pl. la·nu·gos
The fine, soft hair that grows on a fetus and is present on a newborn. Also called lanugo hair.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
lanugo   (lə-n'gō)  Pronunciation Key 
A covering of fine, soft hair or hairlike structures, as on a leaf, insect, or human fetus.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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