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  • silkworm

    Moth caterpillar that feeds chiefly on mulberry leaves. The common domesticated Bombyx mori is raised commercially for its silk cocoon

  • single eyeglass - quizzing

    Eyeglasses consisting of a single lens in frame with long handle, but without nosepiece, used to compensate for defective vision in one eye. Handle usually fitted with ring for carrying ribbon or cord.

  • skeleton

    The bones or bony framework of an animal body considered as a whole; also, more generally, the harder (supporting or covering) constituent part of an animal organism.

  • skin grafting

    A process to move skin from one part of the body to another. Usually carried out as treatment for burns or other extensive skin wounds.

  • skull

    The skeleton of the head of a vertebrate animal, including the brain case, or cranium, and the bones and cartilages of the face and mouth. The skull can be subdivided into two parts: the cranium and the mandible. The human skull is made up from 22 bones.

  • skull saw

    A saw used to cut through the skull. This was often used in preperation for brain surgery.

  • skyphos

    drinking cup

  • slab

    A broad, flat, thick piece of pottery or metal

  • sleeping sickness

    A serious disease that is common in much of tropical Africa, transmitted by tsetse flies. Symptoms include fever, headache, lethargy, confusion, tremors, and loss of weight.

  • slide rule

    Simple mechanical device used for calculations such as multiplication and division.

  • smallpox

    Smallpox is an infectious virus unique to humans. It results in a characteristic skin rash and fluid-filled blisters. After successful vaccination campaigns throughout the 1800s and 1900s, the World Health Organisation certified the eradication of smallpox in 1979. Smallpox is the only human infectious disease to have been completely wiped out.

  • smelling salts

    Used to arouse consciousness. The salts release a small amount of ammonia, which triggers the nasal passage's inhalation reflex.

  • smoking

    A practice where a substance, most commonly tobacco is burned and the smoke inhaled. It is currently practiced by over one billion people worldwide (2008)

  • Snellen test types

    Chart used for vision testing. The chart shows lines of black letters varying in size from large to small down the chart. Which a patient is asked to read. The optician is able to tell the level of the patient's eyesight when s/he can not read any further.

  • snuff

    Tobacco that has been finely powdered. Snuff is usually sniffed through the nose, or applied to the gums with a finger.

  • snuff box

    a small usually ornamental container for holding snuff Boxes, usually having a hinged lid and small enough to be carried in the pocket, used for holding snuff

  • snuff jar

    a box or jar used for holding snuff, usually small enough to be carried in the pocket.


    A method used to detect objects underwater by sending high frequency sound waves and monitoring their reflection.

  • song

    Musical compositions, generally short, containing words. Colloquially, the term song has come to be applied to any short compositions with or without words. This is considered incorrect in the genres of jazz, brass band, classical and popular music.

  • spa

    A resort with mineral springs which are thought to have properties that help cure or soothe illnesses.

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