onych
Onych is a combining form used in medical and scientific terminology to denote nails or claw-like structures. It derives from the Greek word onux (or onychos), meaning nail or claw, and appears in a broad range of terms across dermatology, podiatry, and zoology.
In human medicine, onych- forms terms that relate to nails and nail conditions. Examples include onychomycosis
In zoology, the root appears in the name Onychophora, the velvet worms, whose name means “claw bearers”
As a linguistic element, onych is generally treated as a combining form rather than a standalone word