thymus
Concise Oxford English Dictionary © 2008 Oxford University Press:
thymus /ˈθʌɪməs/
▶noun (pl. thymi /-mʌɪ/) a lymphoid organ situated in the neck of vertebrates which produces T-lymphocytes for the immune system, and which decreases markedly in size at the approach of puberty.
– origin C16 (denoting a bud-like growth): from Gk thumos ‘excrescence, thymus gland’.
'thymus' also found in these Oxford entries:
