n (emergency medicine|countable) The third step in OPQRST where the responder investigates what the NOI/MOI feels like.
n (thermodynamics) In a two-phase liquid-vapor mixture, the ratio of the mass of vapor present to the total mass of the mixture.
n (uncountable) The degree to which a man-made object or system is free from bugs and flaws, as opposed to scope of functions or quantity of items.