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tracheole

[trey-kee-ohl] /ˈtreɪ kiˌoʊl/
noun, Entomology
1.
any of the smallest branches of an insect trachea.
Origin of tracheole
1900-1905
1900-05; trache(a) + -ole1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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