enterprising person; businessperson; industrialist
Refers to someone who undertakes business ventures, often with a connotation of initiative and enterprise. More formal and less everyday than 実業家.
彼は若い頃から事業家として成功した。
He succeeded as an entrepreneur from a young age.
That industrialist is investing in new fields.
事業家 is a slightly old-fashioned synonym for 実業家, both meaning a person who runs a business or enterprise.
Compound of 事業 (enterprise, business) and 家 (person who does that as a profession).