cis

adj

1. (not-comparable)Having two mutations on two genes on the same chromosome of a homologous pair.
2. (not-comparable)Of the side of the Golgi apparatus nearer to the endoplasmic reticulum.
3. (not-comparable, physical)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 […]”

   “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.)”

   “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.”

4. (not-comparable, physical)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.”

5. (not-comparable)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.'”

   “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!”

   “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.”

6. (alt-of, not-comparable, proscribed)Alternative letter-case form of cis (“cisgender”).

noun

1. (abbreviation, alt-of, initialism)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.”

2. (abbreviation, alt-of, initialism)Initialism of clinical information system.
3. (abbreviation, alt-of, initialism)Initialism of clinically isolated syndrome.
4. (abbreviation, alt-of, initialism)Initialism of customer information screen.
5. (form-of, plural)plural of CI

name

1. (Commonwealth, abbreviation, alt-of, initialism)Initialism of Commonwealth of Independent States.
2. (UK, abbreviation, alt-of, initialism)Initialism of Construction Industry Scheme.
3. (Canada, abbreviation, alt-of, historical, initialism)Initialism of Canadian Interuniversity Sport.
4. (Philippines, abbreviation, alt-of, initialism)Initialism of Clark International Speedway.
5. (abbreviation, alt-of, initialism)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.”