Etymograph

English

semideciduous

From semi- + deciduous.

Formed from semi- + deciduous

Proto-Indo-European *sem- ‘one’

Proto-Indo-European *sēmi ‘half’

English semi-

Proto-Indo-European *ḱad- ‘to fall’

…

Proto-Italic *kadō ‘to fall, sink’

Latin cadō ‘to fall’

Latin dēcidō ‘to fall down or off’

Latin dēciduus ‘falling down or off’

English deciduous

Today it means

adj Describing plants that lose their leaves for a short time (as new leaves begin to grow)

Sources

Sources: Wiktionary, “semideciduous”. 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 / semideciduous