photocompositioncommon nounSyllable DecompositionphotocompositionEtymologyexpandsee photo- and composition.Definition1. A process for composing lines of text in typographic quality that became widespread in the 1960s (replacing lead type composition) and was largely computerized in the 1980s.imprimerieexpandPluralphotocompositionsTranslationsenglish:phototypesetting