STD

STD

1. (international standards, historical) ISO 4217 currency code for the former first São Tomé and Príncipe dobra; a currency used from 1977 to 2018.

STD

1. Alternative form of std (“standard”).

STD (countable and uncountable, plural STDs)

2. (medicine) Initialism of sexually transmitted disease.

   Alternative form: S.T.D.

   Synonyms: STI, sexually transmitted infection, VD (dated), venereal disease (dated)

   • 1999, Dr. Ruth's Pregnancy Guide for Couples: Love, Sex, and Medical Facts, →ISBN:

     Some studies estimate that as many as one out of every two people might contract an STD at some point in their lives.

   • 2026 April 17, Marina Hyde, “Is the pope Catholic? JD Vance thinks he has an answer”, in The Guardian‎^[1], →ISSN:

     Avoiding STDs in 1990s Manhattan, Trump memorably clarified, was “my personal Vietnam … I feel like a great and very brave soldier”.

3. (telephony) Initialism of subscriber trunk dialling or subscriber toll dialing.
4. Initialism of short-term disability.
5. (rare, sometimes humorous) Initialism of save the date.

• DST, DT's, DTS, DTs, TDS, TDs, TSD, dst