Apneumona
plural noun
Apneu·mo·na
(ˈ)āˈn(y)ümənə,
apˈn-
variants
or Apneumones
-məˌnēz
: a formerly recognized division of Holothurioidea comprising forms lacking an internal respiratory apparatus compare pneumonophora
apneumonous
adjective
(ˈ)ā¦n-
(ˈ)ap¦n-
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Merriam-Webster unabridged
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