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To descend; to fall; to dismount. [Obs.] And from their sweaty courses did avale. Spenser.

A cavalier; a gallant; a libertine. Shak.

Having seven units of attractive force or affinity; -- said of heptad elements or radicals.

Having a valence of six; -- said of hexads.

Having a valence of eight; capable of being combined with, exchanged for, or compared with, eight atoms of hydrogen; -- said of certain atoms or radicals.

Having a valence of five; -- said of certain atoms and radicals.

See Sexivalent. [R.]

The quality or state of being tetravalent; quadrivalence.

Having a valence of four; tetratomic; quadrivalent.

See Avale, v. [Obs.] Spenser.

Having six atoms or radicals capable of being replaced by acids; hexatomic; hexavalent; -- said of bases; as, mannite is a hexacid base.

An atom or radical which has a valence of eight, or is octavalent.

The quality or state of being quadrivalent; tetravalence.

ur; capable of combining with, being replaced by, or compared with, four monad atoms; tetravalent; -- said of certain atoms and radicals; thus, carbon and silicon are quadrivalent elements.

Same as Pentavalent.

Hexavalent. [R.]

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

Having a valence of four; quadrivalent; tetravalent; sometimes, in a specific sense, having four hydroxyl groups, whether acid or basic.