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A combining form used in anatomy to indicate connection with, or relation to, the temple, or temporal bone; as, temporofacial.

Discovered or described by M. Tenon, a French anatomist. Tenonian capsule (Anat.), a lymphatic space inclosed by a delicate membrane or fascia (the fascia of Tenon) between the eyeball and the fat of the orbit; -- called also capsule of Tenon.

minerals, as gadolinite and samarskite, with other rare ytterbium earth. Symbol Tr or Tb. Atomic weight 150.

Containing, or consisting of, three different parts, as elements, atoms, groups, or radicals, which are regarded as having different functions or relations in the molecule; thus, sodic hydroxide, NaOH, is a ternary compound.

sing some quality in the third degree; having been subjected to the substitution of three atoms or radicals; as, a tertiary alcohol, amine, or salt. Cf. Primary, and Secondary. (CH3)3C.OH.

Capable of neutralizing four molecules of a monacid base; having four hydrogen atoms capable of replacement by bases; quadribasic; -- said of certain acids; thus, normal silicic acid, Si(OH)4, is a tetrabasic acid.

Capable of neutralizing four molecules of a monobasic acid; having four hydrogen atoms capable of replacement ba acids or acid atoms; -- said of certain bases; thus, erythrine, C4H6(OH)4, is a tetracid alcohol.

A tetravalent or quadrivalent atom or radical; as, carbon is a tetrad.

oily hydrocarbon, C14H30, of the marsh-gas series; -- so called from the fourteen carbon atoms in the molecule.

fin, and like it belonging to the marsh-gas series; -- so called from having twenty- four atoms of carbon in the molecule.

Having a valence of four; tetratomic; quadrivalent.

mpound, C2H2N4 which may be regarded as benzene with four CH groups replaced by nitrogen atoms; also, any of various derivatives of the same. There are three isomeric varieties.

any one of a series of double derivatives of the azo and diazo compounds containing four atoms of nitrogen.

A crystalline acid substance, CH2N4, which may be regarded as pyrrol in which nitrogen atoms replace three CH groups; also, any of various derivatives of the same.

Any one of a certain series of basic compounds containing a chain of four nitrogen atoms; for example, ethyl tetrazone, (C2H5)2N.N2.N(C2H5)2, a colorless liquid having an odor of leeks.

ubstance; -- so called because once supposed to contain a peculiar radical of four carbon atoms. Called also acetyl-acrylic acid.

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

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

Butyl; -- so called from the four carbon atoms in the molecule.

Butylene; -- so called from the four carbon atoms in the molecule.