(uncountable) A method of technical drawing where the front view of the object is placed in the third quadrant, the side view is to the right, and the top view is above it. (More common in North America.)

plural of third angle projection

plural of petty officer third class

(US, Navy) A non-commissioned officer in the United States Navy and United States Coast Guard, ranking above seaman and below petty officer second class.

plural of adult third culture kid Abbreviation: ATCKs.

(sociology) A third culture kid who has grown into adulthood. Abbreviations: ATCK.

Synonym of third time's a charm

(music industry, colloquial) Making very minor alterations to a song's lyrics can entitle a person to one third of the royalty payments.