h₂eḱ-mn̥

“sharp stone, thunderbolt”

Widely acceptedmaterialweather

Source of Latin acmen, English acme, acne

Nominal of the sharp root, yielding Latin acmen and Greek akmē, English acme, acne.‌‍‌‌‌‌‌‍‌‌‍‍‌‍‌‌‍‌‌‌‍‌‌‍‍‍‌‌‌‍‌‌

(H)meyǵʰ-“to urinate, to mist”(s)teh₂n-“to thunder”(s)tenh₂-“to crash, to thunder”bʰerdʰ-“to cut, split, separate”bʰerǵ-s-“to protect by enclosing”bʰleh₁-s-“to blow, to blast”bʰleḱ-“to flash, lightning flash”bʰreg-mn̥“that which breaks, fragment”