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Dictionary · Word part

onych/o

A word root that means nail (of a finger or toe).

ON-ih-koh root

What it means

The root in words about the nails. Onychomycosis is a fungal nail infection, onycholysis is a nail lifting off its bed, and paronychia is an infection of the skin around a nail.

At a glance

Also writtenonycho-

Related terms

myc/o

A word root that means fungus.

kerat/o

A word root that means horny tissue (keratin, as in skin and nails) or the cornea of the eye.

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