a combining form meaning “all,” occurring originally in loanwords from Greek (panacea; panoply), but now used freely as a general formative (panleukopenia; panorama; pantelegraph; pantheism; pantonality), and especially in terms, formed at will, implying the union of all branches of a group (Pan-Christian; Panhellenic; Pan-Slavism). The hyphen and the second capital tend with longer use to be lost, unless they are retained in order to set off clearly the component parts.
prefix meaning "all, whole, all-inclusive," from Gk. pan-, combining form of pas (neut. pan, masc. and neut. gen. pantos) "all," of unknown origin. Commonly used as a prefix in Gk., in modern times often with nationality names, the first example of which seems to have been Panslavism (1846, q.v.). Also panislamic (1881), pan-American (1889), pan-German (1892), pan-African (1900), pan-European (1901), pan-Arabism (1930).