panacea n.

word-forming element meaning "all, every, whole, all-inclusive," from Greek pan-, combining form of pas (neuter pan, masculine and neuter genitive pantos) "all," from PIE *pant- "all" (with derivatives found only in Greek and Tocharian).

Commonly used as a prefix in Greek (before a labial pam-; before a guttural pag-), in modern times often with nationality names, the first example of which seems to have been Panslavism (1846). Also panislamic (1881), pan-American (1889), pan-German (1892), pan-African (1900), pan-European (1901), pan-Arabism (1930).

word-forming element, from Latinized form of Greek iatrikos "healing," from iatros "physician, healer" (related to iatreun "treat medically," and iasthai "heal, treat"); of uncertain origin, perhaps from iaomai "to cure," related to iaino "heat, warm, cheer," probably from a root meaning "enliven, animate."