Etymograph

English

semiopen

From semi- + open.

Formed from semi- + open

Proto-Indo-European *sem- ‘one’

Proto-Indo-European *sēmi ‘half’

English semi-

Proto-Indo-European *upo ‘up from under, over’

Proto-Germanic *upanaz ‘open’

Proto-West Germanic *opan

Old English open ‘open’

Middle English open

English open

Today it means

adj Partly open.

Sources

Sources: Wiktionary, “semiopen”. 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 / semiopen