noun
chief operating officer; COO
A corporate executive title; the person responsible for day-to-day operations.
彼は来月から最高執行責任者に就任する。
He will assume the position of chief operating officer next month.
CEO; the highest-ranking executive, responsible for overall strategy, while COO focuses on operations.
A direct translation of the English term 'chief operating officer', composed of 最高 (highest), 執行 (execution), 責任 (responsibility), and 者 (person).