Philosophy

Edited by Ted Honderich.
2nd edition.
Oxford University Press, 2005.
For print version locations, see the UofT Library Catalogue.
Considered by many to be the premier work in its class.

Edited by Simon Blackburn.
Oxford University Press, 1994.
For print version locations, see the UofT Library Catalogue.

3rd edition. Edited by Robert Audi.
Cambridge University Press, 2015.
For print version locations, see the UofT Library Catalogue.

Edited by Garth Kemerling.

Edited by Robert L. Arrington.
Blackwell, 1999.
For print version locations, see the UofT Library Catalogue.

Edited by F.E. Peters.
New York University Press, 1967.
Lengthy definitions of particular Greek words showing how they are used in the writings of Plato and Aristotle, as well as other ancient philosophers.
The online version is available on the Internet Archive, a trusted source, but one for which it is necessary to create a free account and login.