| 释义 |
cis-
cis-(word root) near, on the near side ofExamples of words with the root cis-: cisatlanticcis-pref.1. On this side: cisatlantic.2. 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. Used of a geometric isomer: cis-2-butene.
[Latin, from cis, on this side of; see ko- in Indo-European roots.]cis- prefix 1. (Physical Geography) on this or the near side of: cisalpine. 2. (Chemistry) (often in italics) indicating that two groups of atoms in an unsaturated compound lie on the same side of a double bond: cis-butadiene. Compare trans-5 [from Latin]cis- 1. a prefix occurring in words meaning “on this side of” or “a place on this side of” the thing or place specified by the base word: cisatlantic; cislunar. 2. a prefix used in the names of chemical compounds that are geometric isomers having two identical atoms or groups attached on the same side of a molecule divided by a given plane of symmetry. Compare trans- (def. 2). [< Latin; akin to here] C.I.S., Commonwealth of Independent States. EncyclopediaSeeCIScis-
cis-1. Prefix (in italics) meaning on this side, on the near side; opposite of trans-. 2. genetics a prefix denoting the location of two or more genes on the same chromosome of a homologous pair, in coupling. 3. organic chemistry a form of geometric isomerism with regard to carbon-carbon double bonds. Identical functional groups on the same side of the double bond are cis-. When the four moieties attached to the carbons of the double bond are all different, then the E/Z nomenclature has to be followed. Synonym(s): zusammen (1) [L.] cis- 1. Prefix meaning on this side, on the near side; opposite of trans-2. genetics A prefix denoting the location of two or more genes on the same chromosome of a homologous pair, in coupling. 3. organic chemistry A prefix denoting a form of geometric isomerism in which similar functional groups are attached on the same side of the plane that includes two adjacent, fixed carbon atoms in a ring structure. 4. organic chemistry A prefix denoting a form of geometric isomerism with regard to carbon-carbon double bonds. Identical functional groups on the same side of the double bond are cis-. When the four moieties attached to the carbons of the double bond are all different, then the E/Z nomenclature has to be followed. [L.]cis- Prefix denoting that two groups in a molecule are in the CIS CONFIGURATION. The prefix is usually italicized.CIS-
| Acronym | Definition |
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| CIS-➣On That Side Opposite of Trans (Prefix) |
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