Standard Lemma guide

bis-

prefix · 3 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

prefix

Meaning 1

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

Definition source: English Wiktionary via Wiktextract

Usage: morpheme

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

prefix

Meaning 2

A 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)

Definition source: English Wiktionary via Wiktextract

Usage: morpheme, obsolete

Topics: chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

prefix

Meaning 3

A variant of di-, used for substitutions of two complex rather than simple units.

Definition source: English Wiktionary via Wiktextract

Usage: morpheme

Topics: chemistry, mathematics, natural-sciences, physical-sciences, sciences

Examples

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

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

No etymology was provided for this word.