Cis

//sɪs// adj, name, noun

adj, name, noun ·Moderate ·College level

Definitions

Noun
  1. 1
    Initialism of contact image sensor. abbreviation, alt-of, initialism

    "Because of its tabloid-size scanbed, the Plug-n-Scan has a large footprint that makes it very stable. On the other hand, being a CIS scanner, it's light and has a very low profile and is designed so that the scanner can be stood upright on its end and still function."

  2. 2
    plural of CI form-of, plural
  3. 3
    an alliance made up of states that had been Soviet Socialist Republics in the Soviet Union prior to its dissolution in Dec 1991 wordnet
  4. 4
    Initialism of clinical information system. abbreviation, alt-of, initialism
  5. 5
    Initialism of clinically isolated syndrome. abbreviation, alt-of, initialism
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  1. 6
    Initialism of customer information screen. abbreviation, alt-of, initialism
Adjective
  1. 1
    Having two mutations on two genes on the same chromosome of a homologous pair. not-comparable
  2. 2
    Cisgender (or sometimes cissexual): not trans (transgender or transsexual) nor non-binary. not-comparable

    "We're demonized and criminalized as perverts out to trick and deceive cis hetero men; therefore anything that happens to us, we 'had coming.'"

  3. 3
    Alternative letter-case form of cis (“cisgender”). alt-of, not-comparable, proscribed
  4. 4
    Of the side of the Golgi apparatus nearer to the endoplasmic reticulum. not-comparable
  5. 5
    In (or constituting, forming, or describing) a double bond in which the greater radical on both ends is on the same side of the bond. not-comparable, physical

    "9 is thought to survive longer when the CH = CH bond is cis and to favour the formation of another cis double bond in a propagation reaction involving its displacement by monomer. 10, on the other hand, is more likely to yield a trans double bond […]"

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  1. 6
    In (or constituting, forming, or describing) a coordination compound in which the two instances of a particular ligand are adjacent to each other. not-comparable, physical

    "The cis effect is the labilization of ligands which are cis to certain other ligands."

Proper Noun
  1. 1
    Initialism of Commonwealth of Independent States. Commonwealth, abbreviation, alt-of, initialism
  2. 2
    Initialism of Construction Industry Scheme. UK, abbreviation, alt-of, initialism
  3. 3
    Initialism of Canadian Interuniversity Sport. Canada, abbreviation, alt-of, historical, initialism
  4. 4
    Initialism of Clark International Speedway. Philippines, abbreviation, alt-of, initialism
  5. 5
    Initialism of Center for Immigration Studies. abbreviation, alt-of, initialism

    "Bensman joins Jon Feere, another CIS alumnus who rejoined the Trump administration as ICE’s chief of staff. CIS Executive Director Mark Krikorian reposted DHS’ “Which Way, American Man” ad on X."

Example

More examples

"85% of foreign investors working in Kazakhstan consider it the most attractive market in the CIS."

Etymology

Etymology 1

From Latin cis (“on this side (of), on the near or same side”). Doublet of he, it, here, hither, and hence.

Etymology 2

Clipping of cisgender or cissexual, ultimately from Latin cis.

Etymology 3

Initialisms.

Etymology 4

Likely originates from the false etymology asserting that cis is an initialism standing for comfortable in skin.

Related phrases

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.