Definition of lettrism in US English:

lettrism

(also lettrisme)

noun

  • A movement in French art and literature characterized by a repudiation of meaning and the use of letters (sometimes invented) as isolated units.

Origin

1940s; earliest use found in Time. From French lettrisme (although this is first attested slightly later: 1947 in the title of a work by Isidore Isou) from lettre + -isme.

Pronunciation

lettrism

/ˈlɛtrɪz(ə)m/