noun
mathematical olympiad
Refers to a mathematics competition for pre-university students, typically the International Mathematical Olympiad (IMO) or national-level equivalents.
彼は数学オリンピックで金メダルを取った。
He won a gold medal at the mathematical olympiad.
Full official name for the International Mathematical Olympiad; 数学オリンピック is the common short form.
Compound of 数学 (mathematics) and オリンピック (Olympic), modeled after the International Mathematical Olympiad.