(music) A meter of five eighth notes per measure.

24 hours per day, five days per week (implicitly weekdays: Monday through Friday). Designates a round-the-clock service during the week, but excluding weekends.

Alternative spelling of 9 to 5

(pathology) Abbreviation of parainfluenza virus 5.

(biochemistry) Initialism of 5-hydroxytryptamine.

(sports) Alternative form of 5K.

Initialism of jet propellant 5.; the higher-flashpoint jet fuel used by the U.S. Navy

Alternative spelling of grade five

Alternative form of 9 to 5

plural of 5′ cap