[ trey-kee-ey-shuh n ]
/ ˌtreɪ kiˈeɪ ʃən /
the arrangement of tracheae in insects and other arthropods.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for tracheation
Tracheation: the arrangement or system of distribution of trachea.Explanation of Terms Used in Entomology|John. B. Smith