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  • cholera

    A severe infection of the small intestine commonly contracted through eating or drinking contaminated food or water. Causes severe vomiting and diarrhoea, leading to dehydration, which can be fatal.

  • chromatography

    A method of separating the different components of a chemical mixture. This allows a person to identify what components were in the mixture

  • chromosomes

    The basic elements of DNA - carriers of genetic information.

  • chronograph - timer

    Timepieces used to register the time of an event or graphically register specific time intervals, such as for the duration of events.

  • chronometer

    An accurate timepiece.

  • chronoscope

    Electronic device for measuring extremely short intervals of time with great accuracy, such as for determining the velocity of projectiles.

  • churchwarden pipe

    tobacco pipes with long stems, measuring up to and over 40 cm

  • cinchona

    The dried bark of any of the Cinchona trees. Used to stimulate the appetite, prevent bleeding and, in the past, to treat malaria.

  • cinchonine

    One of the compounds derived from the bark of various species of cinchona trees, used in several medical practices including anti-malarial treatments.

  • circulation

    The system of movement of the blood through the heart and blood vessels around the body.

  • circumcision

    Surgical removal of the foreskin around the penis. Usually for religious or ethical reasons, but may also be done for medical reasons.

  • circumcision knife

    A knife used to perform circumcision.

  • clamp

    An instrument for compression of a structure

  • Claude glass - optical drawing aid

    Device consisting of a black glass mirror of convex form in a carrying case. Used by landscape artists who observed their scene through the mirror, which would provide a picturesque aesthetic of a subtle gradation of tones. It is named after the artist Claude Lorrain (1600-1682) who is synonymous with this artistic movement.

  • cleft lip

    A condition occurring in the womb where the palate and lip do not fuse completely.

  • clergy stole

    a priest's silk vestment worn over the shoulders and hanging down to the knee or below.

  • clinical chemistry

    The study of health, disease and drugs at a chemical, molecular and cellular model.

  • clinical diagnosis

    A diagnosis given based on the signs and symptoms of a disease.

  • clitoridectomy knife

    Knife used for the removal of the clitoris (clitoridectomy), more often a therapeutic rather than medical procedure.

  • cloning

    A process where cells are produced asexually (neither male, nor female) and are genetically identical to the parent cell from which they are produced.

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