h₃eḱ-

“to be swift, sharp”

Widely acceptedspeedsharpness

Source of Greek ōkys, Latin ōcior, English oxygen

Root for swiftness, yielding Greek ōkys (swift) and oxy- in English oxygen (sharp/acid-generating).

h₁rewsH-“to move violently, rush”h₂eḱ-men-₂“sharpness, point of stone”h₂eḱ-men-₃“stone tool, sharp implement”h₂eḱ-mn̥-₂“edge, blade, sharp line”h₂eḱ-r-“sharp point, summit”h₂eḱ-s-“to sharpen (extended with -s)”h₂eḱ-s-mn̥“sharp edge, axle”h₂eḱ-sti-“sharp awl, bristle”