Source : Webster's Revised Unabridged Dictionary (1913)

Trine \Trine\, a. [See {Trinal}.]
   Threefold; triple; as, trine dimensions, or length, breadth,
   and thickness.

Trine \Trine\, n. [F. trine, trin. See {Trinal}.]
   1. (Astrol.) The aspect of planets distant from each other
      120 degrees, or one third of the zodiac; trigon.

            In sextile, square, and trine.        --Milton.

   2. A triad; trinity. [R.]

            A single trine of brazen tortoises.   --Mrs.
                                                  Browning.

            Eternal One, Almighty Trine!          --Keble.

Trine \Trine\, v. t.
   To put in the aspect of a trine. [R.]

         By fortune he [Saturn] was now to Venus trined.
                                                  --Dryden.

Source : WordNet®

trine
     n : the cardinal number that is the sum of one and one and one
         [syn: {three}, {3}, {III}, {trio}, {threesome}, {tierce},
          {leash}, {troika}, {triad}, {trinity}, {ternary}, {ternion},
          {triplet}, {tercet}, {terzetto}, {trey}, {deuce-ace}]