Etymology
Advertisement
morpheme (n.)

"smallest meaningful unit in a language," 1896 (but originally in a different sense, "root, suffix, prefix, etc."), from German morpheme, coined 1895 by Polish-born linguist Jan Baudouin de Courtenay (1845-1929), from Greek morphē "form, shape," a word of uncertain etymology, on analogy of phonème.

Related entries & more 
Advertisement
lexeme (n.)
1937, from lexicon + -eme, ending abstracted from morpheme. Related: Lexemic.
Related entries & more