na-adjective, noun which may take the genitive case particle 'no', noun
high class; high grade; advanced
Describes something of a high level, quality, or rank, often in educational, technical, or formal contexts. Used attributively (高等な, 高等の) or as a noun.
高等な技術を身につけるには時間がかかる。
It takes time to acquire advanced skills.
He is an expert in higher mathematics.