pleh₂-t-

“to spread, flatten (extended)”

Widely acceptedspatialflatness

Source of Latin plānus, English plain, plan, plane, explain

Extended root for flatness, yielding Latin plānus and English plain, plan, plane, explain, plantatio‍‌‌‍‍‍‌‍‌‍‍‍‌‍‍‍‌‌‌‌‌‌‍‍‌‌‍‍‍‌‌‍n.

dʰewb-₂“to be deep, hollow”dʰewb-mn̥“depth, deep place”h₂embʰ-“on both sides, around”h₂embʰ-i-“around, about (locative)”h₁en-dʰo“into, within”h₁en-tero-“inner, interior”h₂eng-“to bend, angle”h₂enh₁-t-“front, forehead”