cis

1. not comparablebiologyHaving two mutations on two genes on the same chromosome of a homologous pair.
2. not comparablebiologyOf the side of the Golgi apparatus nearer to the endoplasmic reticulum.
3. not comparablephysicalchemistryIn (or constituting, forming, or describing) a double bond in which the greater radical on both ends is on the same side of the bond.

   However, a cis double bond causes a kink in the chain. (A cis double bond introduces a bend of about 42 into the linear hydrocarbon chain.)

   2007, Vickie A. Vaclavik, Elizabeth W. Christian, Essentials of Food Science, Springer Science & Business Media, →ISBN, page 277

   2 more examples

   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 […]

   1984, American Chemical Society. Division of Polymer Chemistry, Papers Presented at the ... Meeting

   A cis double bond is one where the hydrogen atoms are both on the same side. In contrast, a trans double bond has them on the opposite side.

   2015, William P Edwards, The Science of Bakery Products, Royal Society of Chemistry, →ISBN, page 26

4. not comparablephysicalchemistryIn (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.

alternative proscribed CIS

1. not comparableCisgender (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.'

   2017 November 21, Trish Bendix, quoting Ashlee Marie Preston, “Why it matters that transgender women are speaking out about Jeffrey Tambor — and that people are listening”, in Yahoo! Lifestyle

   2 more examples

   Oh yeah, because you know who's been long overdue a challenge? The trans community. Oh, they've had their guard down for too long if you ask me. They'll all be checking their privilege on the way home now thanks to you, you brave little cis boy!

   2019 January 17, James Acaster: Cold Lasagne Hate Myself 1999, spoken by James Acaster

   The reality is that LGBTQ+ people face challenges at disproportionally higher rates than their straight counterparts — drug use, sex work, and financial instability can be an unfortunate result. My privilege as a young cis white man whose parents weren't going to let me drown afforded me the ability to make those mistakes and live to talk about it.

   2019 September 24, Jonathan Van Ness, Over the Top: A Raw Journey to Self-Love, HarperCollins, →ISBN, pages 117–118

plural CISes

1. abbreviationinitialismInitialism 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.

   1998, PC Mag, volume 17, number 18, page 179

2. abbreviationinitialismcomputingInitialism of clinical information system.
3. abbreviationinitialismInitialism of clinically isolated syndrome.
4. abbreviationinitialismInitialism of customer information screen.

1. CommonwealthabbreviationinitialismInitialism of Commonwealth of Independent States.
2. UKabbreviationinitialismbusinessInitialism of Construction Industry Scheme.
3. CanadaabbreviationhistoricalinitialismhobbiesInitialism of Canadian Interuniversity Sport.
4. PhilippinesabbreviationinitialismhobbiesInitialism of Clark International Speedway.
5. abbreviationinitialismInitialism 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.

   2025 August 28, Caleb Kieffer, R.G. Cravens, “Homeland Security deploys white nationalist, anti-immigrant graphics to recruit”, in Southern Poverty Law Center

1. not comparableproscribedAlternative letter-case form of cis (“cisgender”).

1. pluralplural of CI