A word with more than two syllables. Sometimes used in a more restricted sense.

that teaches applied arts, sciences, technology, engineering and other academic subjects

(UK, dated) An educational institute that teaches applied arts and sciences rather than academic subjects. / (obsolete) An exhibition of objects illustrating many arts.

(organic chemistry) composed of, or derived from, many vinyl groups

(organic chemistry) Any polymer derived from a vinyl compound.

(linguistics, uncountable) The hypothetical ancestor language or protolanguage of most Polynesian languages.

(anthropology, countable) A person who spoke the Proto-Polynesian language.

(linguistics, anthropology) Of or pertaining to the Proto-Polynesian language, or the people who spoke it.

(chemistry) A polymer that has a specific spatial arrangements of its constituent atoms, leading to an almost crystalline structure

(mathematics) Alternative spelling of homogeneous polynomial