- threefold; triple; trine.
Origin of trinal
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for trinal
The most striking point of similarity is the trinal superfix, which is present in both signs.An Introduction to the Study of the Maya Hieroglyphs
Sylvanus Griswold Morley