Affixes

A phoneme (Greek phōnēma, sound, speech) is one of the perceptually distinct units of sound in a language that distinguish one word from another. On its model, a number of other terms have been formed, of which examples include morpheme (Greek morphē, form), a meaningful unit that cannot be further divided; lexeme (Greek lexis, word), a basic unit of language consisting of one word or several words, the elements of which do not separately convey the meaning of the whole; grapheme (Greek graphē, writing), a minimal unit in a writing system, consisting of one or more symbols serving to represent a phoneme. Adjectives are formed in ‑emic: morphemic, phonemic. Some other words end in ‑eme through accidents of spelling: blaspheme, extreme, raceme, supreme, trireme.