bisect
v.
"to cut in two," 1640s, from Modern Latin bisectus, from Latin bi- "two" (see bi-) + secare "to cut" (see section, n.). Related: Bisected; bisecting.
〔蒋〕[bi-两，二，sect切;’切成两份”] 二等分，平分
〔李〕[bi-=two二；sect=to cut切分→] v. cut into two equal parts把……平分