bis-

prefix

An occasional variant of bi- prefixed to roots beginning with a vowel, as in bisalternate

“Bis (η⁶-arene) metal complexes have been made for many transition metals by the Al/AlCl₃ reduction method.”

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Meanings

prefix
  1. An occasional variant of bi- prefixed to roots beginning with a vowel, as in bisalternate
  2. obsoletechemistryA variant of di- used to indicate that the component that does not take the prefix occurs twice in the compound: a bisoxide is of the form B₂O (cf. dioxide for XO₂)
  3. chemistryA 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.

Cite this entry
APA

bis-. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/bis-

MLA

“bis-.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/bis-. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “bis-,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/bis-.

Source: bis- on Wiktionary, CC BY-SA 4.0.