The story
- Latin · derived fromexpandō“to spread out”
- Anglo-Norman · derived fromespaundre
- English todayexpand
Recorded in Middle English since 1422 (as expanden, expaunden), from Anglo-Norman espaundre, from Latin expandō (“to spread out”), itself from ex- (“out, outwards”) + pandō (“to spread”). Doublet of spawn.
Etymology from Wiktionary, CC BY-SA 4.0.