cis
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cis¹
- /sɪs/
Sounds like sis · Rhymes with -ɪs
Where it comes from
From Latin cis (“on this side (of), on the near or same side”). Doublet of he, it, here, hither, and hence.
adjective
- Having two mutations on two genes on the same chromosome of a homologous pair.
- Of the side of the Golgi apparatus nearer to the endoplasmic reticulum.
- 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. 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 […]
- In (or constituting, forming, or describing) a coordination compound in which the two instances of a particular ligand are adjacent to each other. The cis effect is the labilization of ligands which are cis to certain other ligands.
Opposite: trans
cis²
- /sɪs/
Sounds like sis · Rhymes with -ɪs
Where it comes from
Clipping of cisgender or cissexual, ultimately from Latin cis.
adjective CIS
- Cisgender (or sometimes cissexual): not trans (transgender or transsexual) nor non-binary. We're demonized and criminalized as perverts out to trick and deceive cis hetero men; therefore anything that happens to us, we 'had coming.'
CIS³
Where it comes from
Initialisms.
noun CISes
- Initialism of contact image sensor 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.
- Initialism of clinical information system
- Initialism of clinically isolated syndrome
- Initialism of customer information screen
proper noun
- Initialism of Commonwealth of Independent States
- Initialism of Construction Industry Scheme
- Initialism of Canadian Interuniversity Sport
- Initialism of Clark International Speedway
- Initialism of Center for Immigration Studies 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.
CIS⁴
Where it comes from
Likely originates from the false etymology asserting that cis is an initialism standing for comfortable in skin.
adjective
- Alternative letter-case form of cis (“cisgender”).
CIs⁵
noun
- plural of CI
Thesaurus
Closest in meaning: sgc, gcs, retinol, retinene, diltiazem, retinal, sids, retinaldehyde, pec, photoisomerization, cep, platin, sog, cgs, oms, kie
adjective
Opposite: trans
Translations
Every language
Talk about this word "cis." Wiktionary, via Micwyn, micwyn.com/word/cis. Accessed 6 Nov. 2026. cis. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/cis "cis." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/cis.Cite this
@misc{cis_2026,
title = {cis},
howpublished = {Wiktionary, via Micwyn},
year = {2026},
url = {https://micwyn.com/word/cis},
urldate = {2026-11-06}
}
