biserrate
/ˈbɪsərɪt/ or /ˈbɪsɛrɪt/Definitions
1. adjective
Having two saw-like ridges or edges
“The biserrate teeth of the ancient saw were used to cut through wood efficiently.”
2. adjective
Having two pairs of parallel ridges or edges
“The biserrate pattern on the rock face was a result of geological processes.”