Defn: Having four leaves; consisting of four distinct leaves or leaflets.
TETRAPLA
Tet"ra*pla, n.;
Note: etymologically pl., but syntactically sing. Etym: [NL., fr. Gr. tetraplo`os, tetraploy^s, fourfold.]
Defn: A Bible consisting of four different Greek versions arranged in four columns by Origen; hence, any version in four languages or four columns.
TETRAPNEUMONA
Tet`ra*pneu"mo*na, n. pl. Etym: [NL. See Tetra-, and Pneumo-.]
(Zoöl.)
Defn: A division of Arachnida including those spiders which have four lungs, or pulmonary sacs. It includes the bird spiders (Mygale) and the trapdoor spiders. See Mygale.
TETRAPNUEMONIAN
Tet`rap*nue*mo"ni*an, n. (Zoöl.)
Defn: One of the Tetrapneumona.
TETRAPOD
Tet"ra*pod, n. Etym: [Gr. Tetra-) + (Zoöl.)
Defn: An insect characterized by having but four perfect legs, as certain of the butterflies.