Definify.com

Webster 1913 Edition

ref.

A form of

, sometimes used before s, c, or a vowel.

See also: bis, Bis, biş, biś, and bís

bis-

An occasional variant of bi- prefixed to roots beginning with a vowel, as in bisalternate
(chemistry, obsolete) A variant of tri- used to indicate that the component that does not take the prefix occurs twice in the compound: a bisoxide is of the form B₂O
(mathematics, chemistry) A variant of di-, used for substitutions of two complex rather than simple units.
Bis (η⁶-arene) metal complexes have been made for many transition metals by the Al/AlCl₃ reduction method.

bis-

bis-