noun, noun which may take the genitive case particle 'no'
the greatest of the day; the best of one's time
A yojijukugo used to describe someone or something as the foremost in their field or era. Often used in formal or literary contexts.
彼は当代随一のピアニストと評されている。
He is acclaimed as the greatest pianist of our time.
この作品は当代随一の傑作だ。
This work is the greatest masterpiece of the era.
A yojijukugo combining 当代 (the present age) and 随一 (the first, the best). The exact historical derivation is uncertain, but the phrase is conventionally used to denote preeminence in a given era.