Pronunciation: (grin'ij, -ich, gren'- for 1, 3; gren'ich, grin'-, grēn'wich for 2),[key] —n. 1. a borough in SE London, England: located on the prime meridian from which geographic longitude is measured; formerly the site of the Royal Greenwich Observatory. 209,800.
2. a town in SW Connecticut. 59,578.
3. Informal.See Greenwich Time.