An animation showing the relationship between pressure and volume when amount and temperature are held constant. Boyle's law (sometimes referred to as the BoyleâMariotte law, or Mariotte's law) is an experimental gas law that describes how the pressure of a gas tends to increase as the volume of the container decreases.
Multiple-alarm fire. One-alarm, two-alarm, three-alarm fires, are categories of fires indicating the level of response by local authorities, with an elevated number of alarms indicating an increased number of phone alarms went off during the fire. The term multiple-alarm is a quick way of indicating that a fire is severe and is difficult to contain.
Full Definition of FALSE ALARM. 1. : an alarm (as a fire or burglar alarm) that is set off needlessly. 2. : one causing alarm or excitement that proves to be unfounded. See false alarm defined for English-language learners.ADVERTISEMENT.alse alarm. noun. Tweet. : an alarm (such as a fire alarm) that is set off when it is not needed. : something that causes people to wrongly believe that something bad or dangerous is going to happen.