Meaning of actin

ac•tin

Pronunciation: (ak'tun), [key]
— n. Biochem.
  1. a globulin that is present in muscle plasma and that in connection with myosin plays an important role in muscle contraction.

actin-

Pronunciation: [key]
  1. var. ofbefore a vowel: actinism.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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