Definition of "CIS"

CIS¹

proper noun
1. Initialism of Commonwealth of Independent States.
2. (UK, business) Initialism of Construction Industry Scheme.
3. (Canada, sports, historical) Initialism of Canadian Interuniversity Sport, former name of U Sports.
noun
plural CISes
1. Initialism of contact image sensor.
  Quotations
  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. (medicine, software, acronym, initialism) Abbreviation of clinical information system.

CIS²

adjective
not comparable
1. (proscribed) Alternative letter-case form of cis (“cisgender”).