| cis- | |
| —prefix | |
| 1. | on this or the near side of: cisalpine |
| 2. | Compare trans- (often in italics) indicating that two groups of atoms in an unsaturated compound lie on the same side of a double bond: cis- |
| [from Latin] | |
| the quantity of product formed by the interaction of two or more substances, generally expressed as a percentage |
| a salt of hydrofluoric acid consisting of fluorine, as sodium fluoride, NaF, or a compound containing fluorine, as methyl fluoride, CH3F |
cis- pref.
Often cis- Having a pair of identical atoms or groups on the same side of a plane that passes through two carbon atoms linked by a double bond: cis-butene.