Dictionary of Philosophy of Mind
Most interesting dictionary of mental phenomena.

Dictionary of Universal Spiritual Terms
Glossary of terms of universal spirituality including Buddhism, meditation, Shamanism, Islam, and Christianity.

Silva Rhetoricae: The Forest of Rhetoric
Reference to over 1000 rhetorical terms and a primer for classical and renaissance rhetoric. Each term is accompanied by pronunciation, etymology, definition, examples from literature, cross references, and sources.

A Dictionary of PostmodernTerms
A growing dictionary of terms useful in reading postmodern works.

World Civilizations
Glossary of key concepts in various world civilizations and major eras from Washington State University.

Glossary of Poetic Terms
Guide to the study of poetry including phonetic pronunciation with numerous examples, hyper-linked keywords and cross references.

Literary Terms
Glossary of common literary terms with references to published works where examples of these terms may be found.

Figures of Speech Tables
Provides definitions of various figures of speech in English along with examples from literature of the period.

Lexicon of Humanities
Site features basic glossaries, quotations, and bibliographies per discipline.

The Ism Book
A Field Guide to the Nomenclature of Philosophy.

Prototype Worlds
Glossary of jargon and terminology originally coined in science fiction to describe technologies that did not exist at the time of writing or ideas for which no obviously suitable mainstream term was handy.

Glossary of Poetic Terms
Comprehensive glossary of poetic terms organized by poet, title, first line, timeline, keyword or simple alphabetical index maintained by members of the Department of English at the University of Toronto.