Wiki Pages


  • L

    An abbreviation for liter.

  • labia

    Lips; The folds of skin and mucous membrane that comprises the vulva.

  • labor

    Muscular contractions of the uterus designed to expel the fetus from the mother.

  • laceration

    A wound made by a tearing or cutting action on the tissues.

  • lactate

    A salt of lactic acid.

  • lactated Ringer’s solution

    A sterile intravenous solution containing sodium, potassium, calcium, and chloride ions in concentrations similar to those present in the blood, as well as lactate added as a buffer.

  • lactation

    Secretion of milk.

  • lactic acid

    A metabolic end product of the breakdown of glucose. It tends to accumulate much more quickly when metabolism proceeds in the absence of oxygen.

  • lactic acidosis

    An excess of lactic acid in the blood, causing the blood pH to fall below 7.35.

  • Ladder company

    A group of fire fighters, officers and engineers that staff a ladder truck.

  • Ladder fuels

    Flammable vegetation that helps a ground fire move into the canopy.

  • Ladder pipe

    Nozzle attached to an aerial ladder and used to direct heavy stream from advantageous height.

  • Ladder Pipe

    Master stream nozzle mounted on the fly of an aerial ladder.

  • Ladder truck

    A truck outfitted with an apparatus-mounted aerial ladder, not necessarily outfitted to pump water. Not to be confused with engine. Known as a "Turntable Ladder" in the United Kingdom.

  • Lamella Arch

    An arch constructed of short wooden members connected in a specific geometric pattern. Wile rare in modern construction, these roof assemblies can still be found in many older buildings.

  • Landing Valve

    Globe Valves that are installed on hydrants, a branch and hose is connected to a coupling on it.

  • Large Diameter Hose

    (LDH) Fire hose with a diameter of 3« inches or greater. LDH is typically used to supply water from a fire hydrant to fire apparatus such as an engine or tanker.

  • Large Diameter Hose (LDH)

    Relay-supply hose of 3 1/2 to 6 inches; used to move large volumes of water quickly with a minimum number of pumpers and personnel.

  • large intestine

    The portion of the intestine between the small intestine and the rectum; the colon.

  • laryngectomee

    A person who has had total or partial surgical removal of the larynx; a "neck breather."

  • laryngectomy

    Surgical removal of the larynx.

  • laryngoscope

    In instrument for directly visualizing the larynx and its related structures. Often used by paramedics to intubate, or extract material during choking.

  • laryngospasm

    Severe constriction of the larynx, often in response to allergy or noxious stimuli.

  • larynx

    The organ of voice production.

  • lateral

    Of or toward the side; away from the midline of the body.

  • lavage

    A washing out of a hollow organ, such as the stomach.

  • LCES

    Firefighter safety mnemonic for Lookouts, Communications, Escape routes, Safe zones.

  • lead

    Any one of the records made by the ECG, depending on the direction of current flow.

  • Lead plane

    Aircraft with pilot used to make trial runs over the target area to check wind, smoke conditions, topography and to lead air tankers to targets and supervise their drops.

  • Leatherhead (helmet)

    a cover or protective device worn by fire fighters in some countries, also slang denoting a fire fighter.

  • left atrium

    The upper left chamber of the heart, which receives blood from the pulmonary veins.

  • Left Handed Smoke Shifter

    A non-existent device used to haze probationary firefighters during an overhaul phase, as a Snipe hunt. A crew chief sends his Probie to fetch one, but no such device actually exists. Each truck the probie visits consequently does "…not have Read on! →