Cis

/sɪs/ adj, name, noun

adj, name, noun ·Moderate ·College level

Meaning at a glance

  • Primary sense: Initialism of contact image sensor.
  • Grammar: cis is listed as adj, name, noun.
  • Nearest alternatives: cis isomer, cis person, cisgender, cisgender person.
  • Useful contrasts: trans, E isomer, trans isomer.
  • Usage evidence: 85% of foreign investors working in Kazakhstan consider it the most attractive market in the CIS.

How to use "cis"

  1. Start with the primary definition, then check the part of speech before placing the word in a sentence.
  2. Compare nearby synonyms to make sure "cis" carries the exact meaning, tone, and strength you need.
  3. Use the example sentence as a context check. If your sentence uses the word differently, confirm that the grammar still fits.

Meaning check

  • Does the word fit the sentence's grammar?
  • Does it match the intended tone rather than only the dictionary definition?
  • Would a simpler synonym be clearer for the reader?
  • Is there enough surrounding context to prevent ambiguity?

Source and review context

This entry combines structured lexical data with WordToolSet review checks. Definitions, examples, synonyms, and usage notes may come from different source tables, so the page is designed to show evidence from more than one angle before you rely on "cis" in a final draft.

If a word has several senses, prefer the sense that matches your sentence's grammar and surrounding context. A correct definition can still be the wrong choice when the sentence needs a different register, emphasis, or level of specificity.

Before you rely on this definition

Read the first definition as a starting point, then check the example, synonyms, and part of speech before treating "cis" as the right word for your sentence.

If your draft is formal, technical, persuasive, or sensitive, compare "cis" with a nearby alternative so the final choice matches both meaning and reader expectation.

Compare nearby meanings

  • Use synonyms when you need a softer, stronger, simpler, or more specific word.
  • Use antonyms to check the boundary of the meaning and avoid accidental contrast.
  • Use the example sentence to confirm the word behaves naturally in context.
  • Keep the original wording when a replacement adds complexity without improving precision.

Definition decision workflow

1. Identify the role

Check whether "cis" is acting as adj, name, noun in your sentence. A definition is only useful when the grammar matches the way the word is being used.

2. Test the nearest option

Compare it with "cis isomer" and other nearby choices to see whether the sentence needs a softer, stronger, or more familiar word.

3. Confirm with context

Use the example sentence below as an evidence check, then read your own sentence out loud to catch tone or rhythm problems.

Review note: Definition pages are checked for source coverage, sentence evidence, synonym support, and editorial insight before they are treated as approval-ready pages. If the evidence is too thin, the page remains available to users but is kept out of the approval-facing indexed inventory.

Final meaning check

Before publishing a sentence with "cis", ask whether the word helps the reader understand the idea faster. A precise word should reduce confusion, not simply make the sentence look more polished.

When the definition, synonym evidence, and example context point in the same direction, the word is usually a safer choice. When they conflict, revise the sentence or choose a clearer alternative.

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
Show 1 more definition
  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 […]"

Show 1 more definition
  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."

Synonyms

All synonyms
cis isomercis personcisgendercisgender personcommonwealth of independent statessame-side

Antonyms

transE isomertrans isomertrans person

Example

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

Common questions

What does "cis" mean?

Initialism of contact image sensor.

What is a synonym for "cis"?

Common synonyms include: cis isomer, cis person, cisgender, cisgender person, commonwealth of independent states, same-side.

How do you use "cis" in a sentence?

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

How do you pronounce "cis"?

Pronounced /sɪs/.

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.

More for "cis"