Pronunciation: (bi-gin'ing),[key] —n. 1. an act or circumstance of entering upon an action or state: the beginning of hostilities. 2. the point of time or space at which anything begins: the beginning of the Christian era; the beginning of the route. 3. the first part: the beginning of the book; the beginning of the month. 4. Often, beginnings. the initial stage or part of anything: the beginnings of science. 5. origin; source; first cause: A misunderstanding about the rent was the beginning of their quarrel.
—adj. 1. just formed: a beginning company. 2. first; opening: the beginning chapters of a book. 3. basic or introductory: beginning Spanish. 4. learning the fundamentals: a beginning swimmer.