onychia. Inflammation of the matrix with suppuration and shedding of the nail.
onychocryptosis. Ingrowing toe-nail.
onycholysis. Loosening or shedding of the nails.
onychomalacia. Loss or absence of nail rigidity.
onychomycosis. Any parasitic disease of the nails.
onychophag. One whose habit it is to bite his finger-nails.
onychophagy. Nail-biting.
onychoptosis. Falling off of the nails.
onychorrhexis. Abnormal brittleness of the nails.
onyx. A finger nail or a toe nail.