e·mar·gi·nate 
(ĭ-märjə-nĭt, -nāt′)
(ĭ-märjə-nĭt, -nāt′)adj.
Having a shallow notch at the tip, as in some petals and leaves.
[Latin ēmarginātus, past participle of ēmargināre, to take the edge away : ē-, ex-, ex- + margō, margin-, margin; see merg- in the Appendix of Indo-European roots.]
e·mar′gi·nation (-nāshən) n.
emarginateemarginate leaf