资料来源 : pyDict

三回羽状的

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Tripinnate \Tri*pin"nate\, a. [Pref. tri- + pinnate.] (Bot.)
   Having bipinnate leaflets arranged on each side of a rhachis.

资料来源 : WordNet®

tripinnate
     adj : of a leaf shape thrice pinnate [syn: {tripinnated}]