OPISTHOBRANCH
Etymology
Noun
opisthobranch (plural opisthobranches)
(zoology) A gastropod with gills behind the heart, formerly thought to belong to a single group.
Adjective
opisthobranch (not comparable)
(of gills) Placed behind the heart.
Antonym: prosobranch
(of a gastropod) Having gills placed behind the heart.
Antonym: prosobranch
Source: Wiktionary
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Word of the Day
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WHOLE
(noun) an assemblage of parts that is regarded as a single entity; “how big is that part compared to the whole?”; “the team is a unit”
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