English Words Starting With C

• calm

  adjectivenounverbverb-intransitiveverb-transitiveB1
  /kɑːm/The absence of strong emotions, disturbance, or violent activity; a state of peace and quiet.
• calmative

  adjectivenounLow (C2/professional)
  /ˈkɑːmətɪv/A substance or agent that has a calming or sedative effect; something that reduces excitement, agitation, or nervousness.
• calmodulin

  nounVery Low (C2)
  /kalˈmɒdjʊlɪn/A calcium-binding protein found in all eukaryotic cells, essential for regulating various cellular processes by interacting with other proteins.
• calo

  nounRare
  /ˈkɑːləʊ/A Romani-derived British slang term for a non-Romani person or outsider.
• calochortus

  nounRare
  /ˌkalə(ʊ)ˈkɔːtəs/A genus of flowering plants in the lily family, native to western North America, known for their showy, tulip-like flowers.
• calomel

  nounVery Low (Technical/Historical)
  /ˈkaləm(ə)l/A tasteless, white or pale-yellow, heavy powder, mercurous chloride (Hg₂Cl₂), formerly used extensively in medicine as a cathartic, antiseptic, and purgative.
• calomel electrode

  nounC2
  /ˈkæləmɛl ɪˈlɛktrəʊd/A reference electrode consisting of mercury, mercurous chloride (calomel), and a potassium chloride solution, used to measure electrical potential in electrochemical cells.
• caloocan

  nounC2
  /kɑːˈləʊkɑːn/A highly urbanized city in the northern part of Metro Manila, Philippines, historically significant as a major site of rebellion against Spanish rule.
• caloosahatchee

  nounC2
  /kəˌluːsəˈtʃætʃi/A river in southwestern Florida, United States, flowing from Lake Okeechobee to the Gulf of Mexico.
• calor gas

  nounC2
  /ˈkæl.ə ˌɡæs/A proprietary brand of liquefied petroleum gas (LPG) commonly used in portable containers for heating and cooking.
• caloreceptor

  nounRare
  /ˌkæləʊrɪˈsɛptə/A sensory receptor that responds specifically to heat or temperature changes.
• calorescence

  nounRare
  /ˌkæl.əˈres.əns/The transformation of heat rays into light rays.
• caloric

  adjectivenounLow Frequency / C1+
  /kəˈlɒrɪk/Relating to calories or heat.
• calorie

  nounB1
  /ˈkaləri/A unit of measurement for energy, especially the amount of energy provided by food.
• calories

  nounHigh
  /ˈkæl.ər.iːz/A unit of measurement for the amount of energy that food provides when consumed and digested.
• calorific value

  nounC1
  /ˌkæl.əˈrɪf.ɪk ˈvæl.juː/The amount of energy released when a specific quantity of a substance (typically food or fuel) is completely burned, measured in units like calories or joules per gram.
• calorimeter

  nounLow
  /ˌkæl.əˈrɪm.ɪ.tər/A device for measuring the amount of heat involved in a chemical reaction or other process.
• calorimetry

  nounC2
  /ˌkæl.əˈrɪm.ə.tri/The measurement of the amount of heat involved in a chemical reaction or physical change.
• calorize

  verbverb-transitivevery rare/technical
  /ˈkæl.ə.raɪz/to treat or coat metal with aluminum to protect against high-temperature oxidation
• calotte

  nounVery low frequency (C2 level, highly specialized)
  /kəˈlɒt/A small, close-fitting cap, especially one worn by certain clergy.

Showing 661–680 of 13732 words.