actinomycin

[ak-tin-oh-mahy-sin, ak-tuh-noh-]

ac·tin·o·my·cin

[ak-tin-oh-mahy-sin, ak-tuh-noh-]
noun Pharmacology.
any of a group of related antibiotics derived from several species of streptomyces bacteria, used against susceptible bacteria and fungi and in the treatment of various cancers.

Origin:
actinomyc(es) + -in2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Actinomycin has a plethora of syllables.
So is sesquipedalianism. Does it mean:
a white, crystalline, water-insoluble, powerful high explosive, C3H6N6O6, used chiefly in bombs and shells.
given to using long words.
Collins
World English Dictionary
actinomycin (ˌæktɪnəʊˈmaɪsɪn)
 
n
any of several toxic antibiotics obtained from bacteria of the genus Streptomyces, used in treating some cancers; the most commonly used is dactinomycin (actinomycin D)

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary

actinomycin ac·ti·no·my·cin (āk'tə-nō-mī'sĭn)
n.
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.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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