also multimillionaire, "one worth many millions" (of dollars, pounds, etc.), 1858, from multi- "many times" + millionaire.
Entries linking to multi-millionaire
multi-
before vowels mult-, word-forming element meaning "many, many times, much," from combining form of Latin multus "much, many," from PIE *ml-to-, from root *mel- (2) "strong, great, numerous." It was much-used in forming Latin compounds in classical times and after (such as multianimis "having much courage," multibibus "much-drinking," multicomus "having much hair," multiloquus "talkative"). Many English words that use it (multinational, etc.) are 20c. coinages.
millionaire n.
"a person worth a million dollars, pounds, francs, etc.," 1821, from French millionnaire (1762); see million. The first in America is said to have been John Jacob Astor (1763-1848).