Defn: Of or pertaining to the tetrodons.
— n.

Defn: A tetrodon. [Written also tetradont, and tetraodont.]

TETROL
Tet"rol, n. Etym: [Tetra- + benzol.] (Chem.)

Defn: A hypothetical hydrocarbon, C4H4, analogous to benzene; — so called from the four carbon atoms in the molecule. Tetrol phenol, furfuran. [Obs.]

TETROLIC
Tet*rol"ic, a. (Chem.)

Defn: Of, pertaining to, or designating, an acid, C3H3.CO2H, of the acetylene series, homologous with propiolic acid, obtained as a white crystalline substance.

TETROSE
Tet"rose, n. [Tetra- + -ose.] (Chem.)

Defn: A monosaccharide derived from a certain alcohol.

TETROXIDE
Tet*rox"ide, n. Etym: [Tetra- + oxide.] (Chem.)

Defn: An oxide having four atoms of oxygen in the molecule; a quadroxide; as, osmium tetroxide, OsO.