From Longman Dictionary of Contemporary Englishmillionairemil‧lion‧aire /ˌmɪljəˈneə $ -ˈner/ ●●○ noun [countable] RICHsomeone who is very rich and has at least a million pounds or dollars an American millionaire a millionaire businessman
Examples from the Corpus
millionaire• At least 52 millionaires will be created each year by the £1-a-go National Lottery unveiled yesterday.• The Secretary of State is a millionaire.• This person would become suspicious of others fearing that friendship was only based on the fact that I am now a millionaire.• The money to keep the hospital open was provided by a London millionaire.• Simpson did not appear in court, but his lawyers argued that their client is no millionaire.• I can't afford a new car just now. I'm no millionaire, you know.• Opponents claim the millionaire publisher is trying to buy votes with his fat checkbook.From Longman Business Dictionarymillionairemil‧lion‧aire /ˌmɪljəˈneə-ˈner/ noun [countable] someone who has assets worth at least a million pounds, dollars etcExecutives at the TV company can expect to become millionaires through a 15% holding.a dollar millionaire → paper millionaireOrigin millionaire (1800-1900) French million; → MILLION 