dermatology
Concise Oxford English Dictionary © 2008 Oxford University Press:
dermatology /ˌdəːməˈtɒlədʒi/
▶noun the branch of medicine concerned with skin disorders.
– derivatives
dermatologic adjective,
dermatological adjective,
dermatologically adverb,
dermatologist noun.
dermatologic adjective,
dermatological adjective,
dermatologically adverb,
dermatologist noun.
'dermatology' also found in these Oxford entries:

