trans
/træns/adjective
- Chemistry denoting or relating to a molecular structure in which two particular atoms or groups lie on opposite sides 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 also on opposite sides of the bond【化】反式的：
the trans isomer of stilbene.
反式芪异构体。比较CIS.
词源
independent usage of TRANS-.