I. ˌes-(ˌ)tē-ˈdē noun
Etymology: s exually t ransmitted d isease
Date: 1976
: any of various diseases or infections (as syphilis, gonorrhea, chlamydia, and genital herpes) that are usually transmitted by direct sexual contact and that include some (as hepatitis B and AIDS) that may be contracted by other than sexual means
II. abbreviation
Etymology: New Latin sacrae theologiae doctor
doctor of sacred theology