専せん門もん的てき知ち識しき

noun

expert knowledge; technical knowledge; expertise

Refers to specialized, often professional or academic, knowledge in a particular field.

• この問もん題だいを解かい決けつするには専せん門もん的てき知ち識しきが必ひつ要ようだ。

  Expert knowledge is needed to solve this problem.

• 彼かれはITの専せん門もん的てき知ち識しきを活いかして会かい社しゃを設せつ立りつした。

  He founded a company using his IT expertise.