Definitions

from the GNU version of the Collaborative International Dictionary of English.

  • A Latin preposition, sometimes used as a prefix in English words, and signifying on this side.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • prefix On this side of, e.g. Cis-Neptunian object.
  • prefix chemistry Forming names of chemical compounds in which two atoms or groups are situated on the same side of some plane of symmetry passing through the compound.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From the Latin preposition cis ("on this side of").

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Examples

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