the presiding officer of a meeting, committee, board, etc.
the administrative head of a department in a high school, college, or university.
someone employed to carry or wheel a person in a chair.
to act as or be chairman of (a meeting, committee, etc.).
noun (pl) -men
Also called chairperson, (fem) chairwoman. a person who presides over a company’s board of directors, a committee, a debate, an administrative department, etc
(history) someone who carries a sedan chair
1650s, “occupier of a chair of authority,” from chair (n.) + man (n.). Meaning “member of a corporate body chosen to preside at meetings” is from c.1730. Chairwoman in this sense first attested 1752; chairperson 1971.
the office or rank of chairman.
(of a chemical element in the earth) having an affinity for sulfur. a chalcophile element.
a very common mineral, copper iron sulfide, CuFeS 2 , occurring in brass-yellow crystals or masses: the most important ore of copper; copper pyrites. noun a widely distributed yellow mineral consisting of a sulphide of copper and iron in tetragonal crystalline form: the principal ore of copper. Formula: CuFeS2 Also called copper pyrites chalcopyrite (kāl’kə-pī’rīt’) […]
chalcosis chal·co·sis (kāl-kō’sĭs) n. Chronic copper poisoning. A deposit of fine particles of copper in the lungs or other tissues.