expertise; specialized knowledge; expert intelligence
Refers to deep, specialized knowledge held by an expert, often in academic, technical, or professional contexts. The term 'expert intelligence' is a less common gloss, mainly used in knowledge-management or AI contexts.
Solving this problem requires specialized knowledge.
He has deep expertise from years of experience.
Compound of 専門 (specialty) and 知 (knowledge). The exact historical derivation is uncertain, but it follows a standard Sino-Japanese word-formation pattern.