Buddhism (n.)

an epithet applied to the historical founder of Buddhism, 1680s, from Pali, literally "awakened, enlightened," past participle of budh "to awake, know, perceive," which is related to Sanskrit bodhati "is awake, observes, understands," from PIE root *bheudh- "be aware, make aware." Title given by his adherents to the man who taught this path, Siddhartha Gautama, also known to them as Sakyamuni "Sage of the Sakyas" (his family clan), who lived in northern India 5c. B.C.E.

word-forming element making nouns implying a practice, system, doctrine, etc., from French -isme or directly from Latin -isma, -ismus (source also of Italian, Spanish -ismo, Dutch, German -ismus), from Greek -ismos, noun ending signifying the practice or teaching of a thing, from the stem of verbs in -izein, a verb-forming element denoting the doing of the noun or adjective to which it is attached. For distinction of use, see -ity. The related Greek suffix -isma(t)- affects some forms.