noun which may take the genitive case particle 'no', noun
world's largest; biggest in the world
Used attributively with の to modify a noun, or as a noun itself. Common in news, statistics, and descriptions of records.
これは世界最大のダイヤモンドです。
This is the world's largest diamond.
その会社は世界最大の自動車メーカーに
The company became the world's largest automaker.