as·trag·a·lus

[a-strag-uh-luhs]
noun, plural as·trag·a·li [a-strag-uh-lahy] . Zoology.
(in higher vertebrates) one of the proximal bones of the tarsus; talus.

Origin:
1535–45; < Neo-Latin; see astragal

as·trag·a·lar, adjective
sub·as·trag·a·lar, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
astragalus (æˈstræɡələs) [Click for IPA pronunciation guide]
 
n , pl -li
anatomy another name for talus
 
[C16: via New Latin from Latin: astragal]

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
astragalus is always a great word to know.
So is ort. Does it mean:
a scrap or morsel of food left at a meal.
a chattering or flighty, light-headed person.
American Heritage
Medical Dictionary

astragalus as·trag·a·lus (ə-strāg'ə-ləs)
n.
See talus.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Astragalus extracts have been safely consumed by humans for over a thousand years and are available in any vitamin shop.
One particular ankle bone, the astragalus, had the potential to settle the debate.
It was half of a pulley-shaped anklebone, known as an astragalus, belonging to another new species of whale.
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