(British spelling) A plane triangular graph on which are drawn all the colours that can be made by the additive mixing of red blue and green; these three primary colours are at the apices, while wh...

(uncountable) The branch of philosophy dealing with the study of knowledge; theory of knowledge, asking such questions as What is knowledge?, How is knowledge acquired?, What do people know?,...

(archaic) third-person singular simple present indicative form of disgorge

Initialism of British National (Overseas), a legal status granted by the British government to certain residents of Hong Kong.