Bis Definition

bĭs
adverb
Again; twice. Used as a direction to repeat a passage.
American Heritage
Again: repeat the indicated passage: a note to the performer.
Webster's New World

Twice; showing that something is, or is to be, repeated, such as a passage of music, or an item in accounts.

Wiktionary
interjection
Used to request an additional performance.
American Heritage
Again; once more.
Webster's New World
prefix
Two. Used especially in chemical nomenclature instead of di- when referring to a complex structural feature.
Bisphenol.
American Heritage
An occasional variant of bi- prefixed to roots beginning with a vowel, as in bisalternate.
Wiktionary
(mathematics, chemistry) A variant of bi-, 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.
Wiktionary
affix
Webster's New World
noun

Plural form of bi.

Wiktionary

Origin of Bis

  • French or Italian both from Latin dwo- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • Latin twice dwo- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • Latin bis (“twice”).

    From Wiktionary

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