Below is a list of encyclopedias, dictionaries, and biographical sources that are available in Hunter Library, which provide information on philosophical terms & definitions and philosophers. These sources are also useful for information on religions, practices, philosophies, and numerous other related topics.
Encyclopedias & Dictionaries:
Routledge Encyclopedia of Philosophy, Volumes 1-10
REF B 51 .R68 1998
The Oxford Dictionary of Philosophy
REF B 41 .B53 1994
The Cambridge Dictionary of Philosophy
REF B 41 .C35 1999
A Companion to Metaphysics
REF BD 111 .C626 1995
A Dictionary of Philosophy
REF B 41 .D52 1984
The Oxford Companion to Philosophy
REF B 51 .O94 1995
Dictionary of Philosophy and Religion: Western and Eastern Thought
REF B 41 .R43 1980
Encyclopedia of Aesthetics, Volumes 1-4
Ref BH 56 .E53 1998
Encyclopedia of Applied Ethics, Volumes 1-4
Ref BJ 63 .E44 1998
The Dictionary of Modern American Philosophers, Volumes 1-4
Ref B 935 .D53 2005
Biographical Sources:
Medieval Philosophers.
WCU General PN 451 .D5 v.115
British Philosophers, 1500-1799.
WCU General PN 451 .D5 v.252
British Philosophers, 1800-2000.
WCU General PN 451 .D5 v.262
American Philosophers before 1950
WCU General PN 451 .D5 v.270
American Philosophers, 1950-2000
WCU General PN 451 .D5 v.279
Fifty Key Contemporary Thinkers: From Structuralism to Post-Modernity
Ref B 804 .L37 1994
The Blackwell Guide to the Modern Philosophers: From Descartes to Nietzsche
Ref B791 .B53 2001
Philosophy Dictionaries & Encyclopedias
More encyclopedias and dictionaries on philosophy and world religions