1. A city of southeast Ontario, Canada, west-northwest of Hamilton. Population 110,372.
2. A municipal borough of east-central England on the Cam River north-northeast of London. It is an ancient market town and the site of Cambridge University, established in the 12th to 13th century. Population: 99,800.
3. A city of eastern Massachusetts on the Charles River opposite Boston. Settled in 1630 as New Towne, it is known for its research and educational facilities, including Harvard University (founded in 1636), the Radcliffe Institute for Higher Learning (formerly Radcliffe College, founded 1879), and Massachusetts Institute of Technology (1861). Population: 101,000.