The Collaborative International Dictionary
Tristigmatic
Tristigmatic \Tri`stig*mat"ic\, Tristigmatose
\Tri*stig"ma*tose`\, a. [Pref. tri- + stigma.] (Bot.)
Having, or consisting of, three stigmas.
--Gray.
Wiktionary
tristigmatic
a. (context botany English) Having, or consisting of, three stigmas.