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ma•cron



Pronunciation: (mā'kron, mak'ron), [key]
n.
a horizontal line used as a diacritic over a vowel to indicate that it has a long sound or other specified pronunciation, as (ā) in fate (fāt).

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

macromutationmacronucleate
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