biserrate 二重锯齿
biserrate[ adj ]
having saw-like notches with the notches themselves similarly notched
<adj.all>
Biserrate \Bi*ser"rate\, a. [Pref. bi- + serrate.]
1. (Bot.) Doubly serrate, or having the serratures serrate,
as in some leaves.
2. (Zo["o]l.) Serrate on both sides, as some antenn[ae].