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cot•y•le•don



Pronunciation: (kot"l-ēd'n), [key]
n. Bot.
1. the primary or rudimentary leaf of the embryo of seed plants.
2. Anat.any of several lobules of the placenta.

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

Cotycotyloid
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