First Known Use: 1942
Dictionary
actin
noun ac·tin \ˈak-tən\
Definition of ACTIN
: a cellular protein found especially in microfilaments (as those comprising myofibrils) and active in muscular contraction, cellular movement, and maintenance of cell shape
See actin defined for kids
ADVERTISEMENT
Origin of ACTIN
International Scientific Vocabulary, from Latin actus
Medical Dictionary
actin
noun ac·tin \ˈak-tən\
Medical Definition of ACTIN
Learn More About ACTIN
Browse
ADVERTISEMENT
Seen & Heard
What made you want to look up actin? Please tell us where you read or heard it (including the quote, if possible).