Editing CRS (section)

== Science and technology ==
=== Medicine and biology ===
* [[Cambridge Reference Sequence]], used in mitochondrial DNA testing
* [[Caudal regression syndrome]], a rare congenital disorder
* [[Chinese restaurant syndrome]], purportedly caused by the flavor enhancer glutamate
* [[Chronic radiation syndrome]], resulting from prolonged exposures to radiation
* [[Chronic rhinosinusitis]]
* [[Congenital rubella syndrome]], a disease passed from mother to fetus
* [[Cutaneous radiation syndrome]], a syndrome that results from acute radiation exposure to the skin
* [[Cytokine release syndrome]], in immunology
* [[Cytoreductive surgery]], in cancer treatment

=== Computer science and engineering ===
* [[Canada Remote Systems]], a now-defunct bulletin-board system based in Toronto
* [[Carrier Routing System]], a large-scale core router
* Celestial Reference System(s), see [[Barycentric and geocentric celestial reference systems]]
* Cluster Ready Services, components of [[Oracle Clusterware]] for database support
* [[Cold rolled steel]]
* [[Commercial Resupply Services]], a NASA contract to deliver supplies to space
* [[Common reference string model]], in cryptography
* [[Computer reservations system]] (or ''Central Reservation System''), a computerised system used for travel bookings
* [[Coordinate reference system]], used to locate geographical entities