Etymograph

English

subalgebra

From sub- + algebra.

A compound of sub- + algebra

Proto-Indo-European *upó ‘up; from below’

Proto-Italic *supo ‘under’

Latin sub ‘under, beneath, below’

English sub-

Arabic جَبَرَ ‘to set’

Arabic الْجَبْر ‘reunion, resetting of broken parts’

Medieval Latin algebra

English algebra

Today it means

noun A closed subset of an algebra.

Sources

Sources: Wiktionary, “subalgebra”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / subalgebra

Shirt and support for this word