thymus [ˈθʌɪməs] (亦作 thymus gland) (pl. thymi -mʌɪ)
a lymphoid organ situated in the neck of vertebrates which produces T-lymphocytes for the immune system. The human thymus becomes much smaller at the approach of puberty 胸腺
语源
late 16th cent. (denoting a growth or tumour resembling a bud): from Greek thumos 'excrescence like a thyme bud, thymus gland'