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Dictionary


per•i•os•tra•cum



Pronunciation: (per"ē-os'tru-kum), [key]
n.,
pl. -caPronunciation: (-ku). [key]

the external, chitinlike covering of the shell of certain mollusks that protects the limy portion from acids.

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

periostitisperiotic

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