(music) An interval that is equivalent to a major second.

(music) an interval that is equivalent to a perfect fourth

plural of augmented third

plural of diminished third

plural of third inversion

(music) a position of a seventh chord when the seventh of the chord is the lowest note

plural of third gender

(anthropology) A category (a gender), present in societies which recognize three or more genders, which is neither male nor female; in some societies, the category may contain individuals who are intersex or androgynous, while other societies may categorize transgender people into it. (Compare fourth gender.)

(UK, law, obsolete) A third part of the profits of fines and penalties imposed at the country court, which was among the perquisites enjoyed by the earl.

A relief aircrew member, often used on long-distance flights.