definition of
STD

[1] #1 STD n. [venereal disease, VD, venereal infection, social disease, Cupid's itch, Cupid's disease, Venus's curse, dose, sexually transmitted disease] a communicable infection transmitted by sexual intercourse or genital contact. wn

[2] #2 STD n. [Doctor of Sacred Theology] a doctor's degree in theology; "STD is from the Latin Sanctae Theologiae Doctor". wn