Firing order. The firing order is the sequence of power delivery of each cylinder in a multi-cylinder reciprocating engine. This is achieved by sparking of the spark plugs in a gasoline engine in the correct order, or by the sequence of fuel injection in a Diesel engine.
health care provider - a person who helps in identifying or preventing or treating illness or disability. caregiver, health professional, PCP, primary care provider. health profession - the body of individuals whose work helps to maintain the health of their clients.
physician. 1  a person licensed to practice medicine; doctor of medicine. 2  any medical doctor other than one specializing in surgery. 3  any person or thing that heals, relieves, or comforts.