Definition of "q"

The seventeenth letter of the English alphabet, called cue and written in the Latin script.  examples

The ordinal number seventeenth, derived from this letter of the English alphabet, called cue and written in the Latin script.  examples

(athletics) Abbreviation of non-automatic qualification: indicates an athlete who qualifies to the next round either by time as a fastest loser (in track events) or by position without achieving the qualifying target (in field events).  examples

Abbreviation of question.  quotations  examples

(medicine) Each, every (with a time interval).  examples