Definition, Meaning & Synonyms

sesqui

Prefix

/ˈsɛs.kwɪ/

Definition

A prefix meaning one and a half or one and a quarter.

Examples

Sesquicentennial refers to the 150th anniversary of an event.
Sesquioxide indicates a compound containing three oxygen atoms for every two metal atoms.

Meaning

The term ‘sesqui’ is derived from Latin, combining ‘se’ meaning ‘one’ and ‘qui’ meaning ‘and a half’. It is often used in various scientific and mathematical contexts.