physicalism physical • physicalist · · · Info · Definitions · Synonyms · Characters · · physicalism · · Text Latin · · Script 11 · · Length Definitions · · · (noun) (philosophy) the philosophical theory that matter is the only reality. Synonyms: materialism. · · Noun Definition 1 Synonyms · · · materialism · · Synonym 1 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D p latin small letter p U+0070 s latin small letter s U+0073 y latin small letter y U+0079