Trinal \Tri"nal\, a. [L. trinus triple, trini three each, fr. tres, tria, three. See Three, and cf. Trine, a. & n., Tern, a.]

Threefold. "Trinal unity." --Milton. [1913 Webster]

In their trinal triplicities on high. --Spenser. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

Trinal \Tri"nal\, a. [L. trinus triple, trini three each, fr. tres, tria, three. See Three, and cf. Trine, a. & n., Tern, a.]

Threefold. ``Trinal unity.'' --Milton.

In their trinal triplicities on high. --Spenser.

Source: Webster's Revised Unabridged Dictionary (1913)