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must (4)
must-have
must-see
mustache
mustachio
mustang
mustard
mustard and cress
mustard gas
mustard oil
mustard plaster
mustee
musteline
muster
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mutagen
mu·ta·gen [ mytəjən ] (plural mu·ta·gens)


noun 
Definition:
 
something that increases mutation: an external agent that increases the rate of mutation of cells or organisms, e.g. radiation or some chemicals or viruses
[Mid-20th century. <mutation + -gen]

mu·ta·gen·e·sis [ mytə jénnəssiss ] noun
mu·ta·gen·ic [ mytə jénnik ] adjective
mu·ta·gen·i·cal·ly adverb
mu·ta·ge·nic·i·ty [ mytəjə níssətee ] noun
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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