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sematic

[si-mat-ik] /sɪˈmæt ɪk/
adjective, Biology
1.
serving as a sign or warning of danger, as the conspicuous colors or markings of certain poisonous animals.
Origin
1885-1890
1885-90; < Greek sēmat- (stem of sêma) sign + -ic
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for sematic

sematic

/sɪˈmætɪk/
adjective
1.
(of the conspicuous coloration of certain animals) acting as a warning, esp to potential predators
Word Origin
C19: from Greek sēma a sign
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for sematic
adj.

"significant, indicative," 1890, from Greek semat-, comb. form of sema (genitive sematos) "sign" (see semantic) + -ic. Used especially in biology, in reference to "warning" colors, etc.

Online Etymology Dictionary, © 2010 Douglas Harper
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