[ hol-uh p-noo-stik, -nyoo-, hoh-luh p- ]
/ ˌhɒl əpˈnu stɪk, -ˈnyu-, ˌhoʊ ləp- /


having all the spiracles open, as the tracheal systems of most insects.

Origin of holopneustic

1890–95; holo- + Greek pneustikós pertaining to breathing, equivalent to pneust(ós) verbid of pneîn to breathe (see pneuma) + -ikos -ic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019