a communicable infection transmitted by sexual intercourse or genital contact
"He decided to get tested at the clinic because he was worried about having contracted an STD from his recent partner."
a doctor's degree in theology
"STD is from the Latin Sanctae Theologiae Doctor"
Sexually transmitted disease.
"The technical specifications are listed in std format on page three of the manual."
Abbreviation of standard.
In plain English: In programming, std is just shorthand for standard library code that helps you do common tasks without writing everything from scratch.
"The doctor explained that every patient must get tested for an std before being discharged from the hospital."
Alternative form of std (“standard”)
"The abbreviation std is often seen as an alternative spelling of standard in technical documentation."
In plain English: Std is short for standard, which means something that is normal or typical rather than special or unique.
"The standard steel beams were easier to install than custom ones."