cis
/sɪs/adjective
- Chemistry denoting or relating to a molecular structure in which two particular atoms or groups lie on the same side of a given plane in the molecule, in particular denoting an isomer in which substituents at opposite ends of a carbon-carbon double bond are on the same side of the bond【化】同侧的, 顺式的：
the cis isomer of stilbene.
顺式异构体芪。比较TRANS.
词源
independent usage of cis-.