Etymograph

English

sidelength

From side + length.

A compound of side + length

Proto-Germanic *sīdaz ‘drooping’

Proto-Germanic *sīdǭ ‘side’

Old English sīde ‘side’

Middle English side

English side

Proto-Indo-European *dlongʰos ‘long’

…

Proto-Germanic *langiþō ‘longness’

Proto-West Germanic *langiþu ‘longness’

Old English lengþ

Middle English lengthe

English length

Today it means

noun The length of a side (of a polygon).

Sources

Sources: Wiktionary, “sidelength”. 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 / sidelength

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