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  • s (barred)

    An abbreviation meaning "without".

  • S wave

    The first downward deflection of the QRS complex that is preceded by an R wave.

  • S-130/S-190

    The basic wildland fire training course given to all U.S. firefighters before they can work on the fire lines.

  • S-T segment

    The interval between the end of the QRS complex and the beginning of the T wave. It is often elevated or depressed with respect to the isoelectric line when there is significant myocardial ischemia.

  • SA node

    An abbreviation for sinoatrial node. Usually the pacemaker in charge of a normal heart beat.

  • sacral

    Pertaining to the sacrum, part of the lower spine.

  • sacroiliac joint

    The point of attachment of the ilium to thesacrum.

  • sacrum

    A part of the lower spine formed by five fused vertebrae.

  • saddle joint

    A joint formed where a portion of one bone hangs over another, as in the thumb.

  • Safety Data Sheet (SDS)

    Form provided by the manufacturer and blender of chemicals that contains information about chemical composition, physical and chemical properties, health and safety hazards, emergency response procedures, and waste disposal procedures of a specified material

  • Safety Data Sheet (SDS)

    Form provided by the manufacturer and blender of chemicals that contains information about chemical composition, physical and chemical properties, health and safety hazards, emergency response procedures, and waste disposal procedures of a specified material

  • Safety zone

    An area cleared of flammable material used for escape in the event the line is outflanked or in case a spot fire causes fuels outside the control line to render the line unsafe. In firing operations, crews progress so as Read on! →

  • Salamander

    Portable heating device generally found on construction sites

  • Salamander

    Portable heating device generally found on construction sites

  • salicylate

    The class of drugs that includes aspirin.

  • saline

    A solution containing salt.

  • salivary glands

    The glands that produce and secrete saliva, connected to the mouth through ducts.

  • Salvage

    Removing or covering personal property which could be subjected to possible smoke, fire, water or other damage during firefighting, or removal and diverting of smoke and water to prevent further damage. Stopping a broken sprinkler head is one type of Read on! →

  • Salvage cover

    Tarps used to protect property (contents) during overhaul.

  • Sanction

    Notice or punishment attached to a violation for the purpose of enforcing the law or regulation

  • Sanction

    Notice or punishment attached to a violation for the purpose of enforcing the law or regulation

  • SAR

    See Search and rescue.

  • Sawtooth Roof

    A roof with a profile of vertical and sloping surfaces that resemble a saw blade. These roofs are common on older industrial buildings, but many are still in existence. The vertical walls in the roofs usually include man windows to Read on! →

  • Sawyer

    Chainsaw crew, may also include faller or feller who is qualified to cut down trees or snags, perhaps while the tree or snag is burning.

  • scalp vein set

    An intravenous needle with butterfly "wings". Now rarely used to infuse fluids.

  • scapula

    The shoulder blade.

  • Scarf Joint

    Connection between two parts made by the cutting of overlapping mating parts and securing them by glue or fasteners so that the joint is not enlarged and the patterns are complementary

  • Scarf Joint

    Connection between two parts made by the cutting of overlapping mating parts and securing them by glue or fasteners so that the joint is not enlarged and the patterns are complementary

  • SCBA

    Self Contained Breathing Apparatus, or air-pack, worn by firefighters to protect against toxic fumes and smoke, or where the air has insufficient oxygen. Often incorrectly called "oxygen mask" by laypersons. These are typically open circuit style, with a supply of Read on! →

  • Scene safety

    Steps taken at or near an emergency scene to reduce hazards and prevent further injuries to workers, victims or bystanders.

  • Schedule

    Table or chart on plans that contains information relating to doorsm, windows, hardware, and room finishes

  • Schedule

    Table or chart on plans that contains information relating to doorsm, windows, hardware, and room finishes

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