1) Compound 2) Thrice pinnate 3) Tripinnated 1) Compound 2) Tripinnated 
pinnately compound three times, with pinnate pinnules
• (a.) Having bipinnate leaflets arranged on each side of a rhachis.
thrice divided
Descriptive of a pinnate leaf having pinnate leaflets with pinnate pinnules.
<botany> Of leaves, pinnately divided three times. ... (09 Oct 1997) ... 
thrice divided
Pinnately divided three times
Three times pinnate.
Thrice pinnately compound leaf.
[adj] - of a leaf shape thrice pinnate
tripinnate 1. In botany, leaves, pinnately divided three times. 2. Divided into pinnae that are subdivided into smaller, further subdivided leaflets or lobes, as in many ferns.
tripinnated adjective of a leaf shape thrice pinnate