(music) A subgenre of hardcore punk.

Initialism of one-dimensional.

A selective service class denoting that the registrant is already a reserve member of the armed forces or a student taking military training, as in ROTC or an accepted aviation cadet applicant.

(medicine) Once per day, used for prescription directions.

Alternative form of DOF (In the sense Degree(s) of Freedom)

Alternative form of VD

Alternative form of DAT

Alternative form of EADA

Alternative form of DS

(Judaism) besiyata dishmaya (Transliterated form of בס״ד, written at the top of documents).