Erayada ka bilowda xarafka C ee Walax-ogaalka (physics)
- Cable: Waayir
- Calculating Machine: Makiinadda Xisaabinta
- Calibration: Sargoyn
- Calorie (unit): Kaalori (halbeeg)
- Calorific Value: Qiime Tamar-gudasho
- Calorimeter: Kulbeeg
- Camera: Kamara/d
- Camera Tube: Dhuun Kamaro
- Camouflage: Isqarin
- Candela (unit): Kandeela (halbeeg)
- Candle: Shamac
- Candle Power: Awood Shamac
- Capacitance: Madhxin
- Capacitor: Madhxiye
- Capacity: Qaad
- Capillarity: Tintafid
- Capture: Qabasho
- Carbon Cycle: Meerto Kaarbon
- Carnot Cycle: Meerto Kaarnot
- Carnot Law: Xeerka Kaarnot
- Carrier: Side
- Carrier Wave: Hir Side
- Cascade: Tax
- Cassette: Kaaseet
- Casting: Birqaabayn
- Catalysis: Kalkaalid
- Catalyst: Kalkaale
- Catching Diode: Laba-qotinle qable
- Cathode: Qotintabane
- Cathode ray oscilloscope: Osiliskoob Fallaadh-qotin-tabane
- Cathode Ray Tube (CRT): Dhuun Fallaadh-qotin-tabane (Dh. F. Q.)
- Cathode Rays: Fallaadho Qotintabane
- Cation: Ayoon-togan
- Cavendish Experiment: Tijaabada Kafindhish
- Cavitation: Xordin
- Celestial Sphere: Kubad Cireed
- Cell: Unug
- Celsius Degree: Cabbirka Selsiyas
- Centigrade: Sentigaraydh
- Central Force: Xoog xudduneed
- Centre: Xuddun
- Centre of Gravity: Xuddun Cufisjiidad
- Centre of Mass: Xuddun Cuf
- Centrifugal Force: Xoog Xuddun
- Centrifuge: Weedhaamin
- Centrosymmetry: Xuddun Wanqar
- CGS system: Habka CGS
- Chain Reaction: Falgal Taxan
- Channel: Marin
- Characteristic Force: Xoog Astaameed
- Charge: Saldanab
- Charge Density: Cufnaan Saldanab
- Charles Law: Xeerka Jaarlas
- Chemical Constants: Madoorsoomayaal Kiimikaad
- Chemical Energy: Tamar Kiimikaad
- Chemical Equilibrium: Dheelitir Kiimikaad
- Chemical Reaction: Falgal Kiimikaad
- Chemical Reactivity: Falgalan Kiimikaad
- Chemical Shift: Durug Kiimikaad
- Chemical Change: Isbeddel Kiimikaad
- Chip: Jab
- Choke: Ceeje
- Choke Coil: Duub Ceeje
- Choke Coupling: Sidkid Ceeje
- Chromatic Aberration: Haydh Midabeed
- Circuit: Mareeg
- Circuit Breaker: Mareeg-gooye
- Classical Physics: Fiisikikada Qaraamiga
- Clinical Thermometer: Kulqiyaasaha Shaybaadhka
- Clockwise: Saacad-wareeg
- Closed Circuit: Mareeg Xidhan
- Closed Shell: Heertamar Buuxa
- Cluster: Urur
- Coaxial Line: Xadhig dhidib-wadaag
- Code: Afgarad
- Coefficient: Weheliye
- Coefficient of Expansion: Weheliye Fidid
- Coefficient of Friction: Weheliye Islis
- Coherence: Isla-haysi
- Coherent: Isla-haysta
- Cohesion: Bahisjiidad
- Cohesive Energy: Tamar Bah-isjiidad
- Cohesive Force: Xoog Bahisjiidad
- Coincidence: Kulandhac
- Coincidence Circuit: Mareeg Kulandhac
- Collector: Ururiye
- Collecting Power: Awood Urursi
- Collision: Is-hirdi
- Collision Density: Cufnaan Is-hirdi
- Collision of the First Kind: Is-hirdiga Nooca Koowaad
- Collision of the Second Kind: Is-hirdiga Nooca Labaad
- Collision Probability: Itimaal Is-hirdi
- Collision Theory: Aragti Is-hirdi
- Colloidal Emulsion: Furuuruc Kolaydhaleed
- Colorimeter: Midab-beege
- Colour: Midab
- Colour Analyser: Midab-saafe
- Colour Content: Midab lahaan
- Colour Contrast: Midab kala-duwid
- Colour Filter: Midab kala-reebe
- Colour Index: Muujiye Midab
- Colour Triangle: Saddex-xagal Midab
- Colour Vision: Midab-arkid
- Column of Air: Joogtax Hawo
- Combination Tones: Laxanno wadajir
- Combustion: Gubasho
- Combustion Engine: Injiin Gubasho
- Comet: Seef-cireed
- Communication: Isgaadhsiin
- Communication Satellite: Dayaxgacmeed Isgaadhsiineed
- Commutator: Xidhiidhiye
- Compact: Tisan
- Compass: Jiheeye/Goobeeye
- Compensator: Magdhabe
- Complementary Colours: Midabyo Isbuuxsha
- Compound Lens: Bikaac Laalaab
- Compound Pendulum: Siirimiiri Laablaaban
- Compound Microscope: Makros
- Compressibility: Diismid
- Compression: Diismo
- Compressional Waves: Hirar Diismo
- Compressor: Diise
- Compton Effect: Raadka Kamton
- Computer: Kambiyuutar
- Concave: Golxo
- Concave Lens: Bikaaco golxo
- Concave Mirror: Muraayad golxo
- Concentration: Ribnaan
- Condensation: Uumihoorow
- Condenser: Uumihoorshe
- Conductance: Gudbin
- Conduction Band: Liid Gudbineed
- Conduction Current: Qulqul gudbineed
- Conduction Electrons: Elektaroonno gudbineed
- Conduction of Heat: Kulgudbin
- Conductivity: Gudbitaan
- Conductivity, Electrical: Gudbitaan danab
- Conductivity, Thermal: Gudbitaan kul
- Conductor: Gudbiye
- Configuration: Ratibaad
- Configuration of Electrons: Ratibaad Electroonno
- Conjugate: Xisti
- Conjugate Foci: Bara-kulmis Xisti
- Conjugate Points: Baro Xisti
- Conservation: Waarid
- Conservation Laws: Xeerar Waarid
- Conservation of Angular Momentum: Waarid Daafad xagleed
- Conservation of Charge: Waarid Saldanabeed
- Conservation of Energy: Waarid Tamareed
- Conservation of Linear Momentum: Waarid Daafad xarriiqeed
- Conservation of Mass: Waarid Cuf
- Conservative Field: Badad Waarsan
- Consonance of Music: Habsan-u-dhaca Miyuusikada
- Couple: Sidkan
- Coupled Circuits: Mareego Sidkan
- Coupling: Sidkayn
- Covalent Bond: Dabar-wadaag
- Corrosion: Leefid
- Creep: Gurguur
- Critical: Qirinqiir
- Critical Angle: Xagal Qirinqiir
- Critical Density: Cufnaan Qirinqiir
- Critical Point: Bar Qirinqiir
- Critical Temperature: Heerkul Qirinqiir
- Crookes Dark Space: Dululaaqiga-mugdiga ee Kuruuk
- Cross-section: Jeeb-gudub
- Cross-talk: Doc-ka-hadal
- Crystal: Wiriq
- Crystal diode: Laba-qotinle Wiriqeed
- Crystal Structure: Dhis wiriq
- Crystal symmetry: Wanqar wiriq
- Cube: Saddexjibbaarane
- Curie Law: Xeerka Kuuri
- Curie Point: Barta Kuuri
- Current: Qulqul
- Current Density: Cufnaan qulqul
- Current Transformer: Dooriye qulqul
- Curvature: Xoodsanaan
- Cut-off frequency: Rakaad goynta
- Cycle: Meerto/wareeg
- Cylinder: Dhululubo