Webster’s Revised Unabridged Dictionary · 1913
Relational
Re·la′tion·al (r?-l?′sh?n-al), a. 1. Having relation or kindred; related.
We might be tempted to take these two nations for relational stems. Tooke.
2. Indicating or specifying some relation.
Relational words, as prepositions, auxiliaries, etc. R. Morris.