重锯齿状的
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].
biserrate adj : having sawlike notches with the notches themselves similarly notched