The American Heritage® Dictionary of the English Language, 4th Edition
adj. Of or arising from kinship.
adj. Indicating or constituting relation.
adj. Grammar Of, relating to, or being a word or particle, such as a conjunction or preposition, that expresses a syntactic relation between elements in a phrase or sentence.
adj. A database technology using tables and the principles set forth by Dr. Edgar F. Codd. (Contrary to popular notion, "relation" in this context refers to tables, and not linkages.)
the GNU version of the Collaborative International Dictionary of English
adj. Having relation or kindred; related.
adj. Indicating or specifying some relation.
The Century Dictionary and Cyclopedia
Having relation or kindred.
Indicating or specifying some relation: used in contradistinction to notional: as, a relational part of speech. Pronouns, prepositions, and conjunctions are relational parts of speech.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. having a relation or being related
Word Usage
"Teller (1989) has introduced the related idea of what he calls relational holism."