lettrism (iou)

lettrism noun. . M20.
[French, formed as LETTER noun1: see -ISM.]
A movement in French art and literature characterized by a repudiation of meaning and the use of letters (sometimes invented) as isolated units.
lettrist, lettriste [letrist (pl. same)] noun & adjective (a) noun an exponent or advocate of lettrism; (b) adjective pertaining to or characteristic of lettrism or lettrists: M20.