/ˈpjʊəɹə(ɹ)/
adjective
Free of flaws or imperfections; unsullied.Free of foreign material or pollutants.Free of immoral behavior or qualities; clean.Mere; that and that only.(of a branch of science) Done for its own sake instead of serving another branch of science.Of a single, simple sound or tone; said of some vowels and the unaspirated consonants.(of sound) Without harmonics or overtones; not harsh or discordant.