actinomycin definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
any of various antibiotic polypeptides derived from streptomyces soil bacteria: active against certain bacteria and fungi and some neoplasms
Origin: ; from actinomycete plush -in
actinomycin definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Any of various red, often toxic, polypeptide antibiotics obtained from soil bacteria.
actinomycin - Medical Definition
Any of a large group of red, often toxic, polypeptide antibiotics isolated from soil bacteria of several species of Streptomyces (originally Actinomyces) that are active against gram-positive bacteria and fungi.