Definition of Apneumona
: a formerly recognized division of Holothurioidea comprising forms lacking an internal respiratory apparatus — compare pneumonophora
apneumonous\(ˈ)ā¦n-, (ˈ)ap¦n-\ adjective
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Origin and Etymology of apneumona
New Latin, from 2a- + -pneumona, -pneumones (from Greek pneumon-, pneumōn lung)
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