23-letter words containing g, a, i, n, s
- tongass national forest — a temperate rainforest in SE Alaska that also harbors more than two dozen communities, including Juneau: largest US national forest. 17 million acres (69,000 km).
- trans-new guinea phylum — the largest grouping of the non-Austronesian languages of Papua and New Guinea and the surrounding regions
- transplantation antigen — a histocompatibility antigen identified by its effect on the rejection of transplanted cells or tissues.
- trigonal trisoctahedron — a trisoctahedron whose faces are triangles.
- triple expansion engine — (formerly) a steam engine in which the steam is expanded in three stages in cylinders of increasing diameter to accommodate the increasing volume of the steam
- unconditional discharge — the release of a defendant without having to spend time on parole or probation
- user interface language — (language, graphics) (UIL) A language for specifying widget hierarchies etc. in OSF/Motif and DECwindows.
- voter registration card — a card that enables a person to register in order to vote
- voyageurs national park — a national park in N Minnesota. 343 sq. mi. (888 sq. km).
- western lowland gorilla — the largest of the anthropoid apes, Gorilla gorilla, terrestrial and vegetarian, of western equatorial Africa and the Kivu highlands, comprising the subspecies G. g. gorilla (western lowland gorilla) G. g. graueri (eastern lowland gorilla) and G. g. beringei (mountain gorilla) now rare.