Google Share on Facebook Thesaurus Wikipedia Related to Gautama Siddhartha:Buddha Gau·ta·ma (gô′tə-mə, gou′-),SiddharthaKnown as"the Bud·dha"(bo͞o′də, bo͝od′ə)563?-483?bc. Indian mystic and founder of Buddhism. Born a prince, he began preaching at the age ...