Chemistry. a binary compound consisting of a chalcogen and a more electropositive element or radical.
the art of engraving on copper or brass. noun the art of engraving on copper or brass
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 […]
the office or rank of chairman.