TETRABRANCHIATA
Tet`ra*bran`chi*a"ta, n. pl. Etym: [NL. See Tetra-, and Branchia.] (Zoöl.)
Definition: An order of Cephalopoda having four gills. Among living species it includes only the pearly nautilus. Numerous genera and species are found in the fossil state, such as Ammonites, Baculites, Orthoceras, etc.
Source: Webster’s Unabridged Dictionary 1913 Edition
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18 April 2025
GROIN
(noun) the crease at the junction of the inner part of the thigh with the trunk together with the adjacent region and often including the external genitals
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