Inert may refer to: * Chemically inert, not chemically reactive **

Inert gas An inert gas is a gas that does not readily undergo chemical reactions with other chemical substances and therefore does not readily form chemical compounds. The noble gases often do not react with many substances and were historically referred to ...

Noble gas The noble gases (historically also the inert gases; sometimes referred to as aerogens) make up a class of chemical elements with similar properties; under standard conditions, they are all odorless, colorless, monatomic gases with very low ch ...

, historically called inert gas *

Inert knowledge Inert knowledge is information which one can express but not use. The process of understanding by learners does not happen to that extent where the knowledge can be used for effective problem-solving in realistic situations. The phenomenon of inert ...

, information which one can express but not use *

Inert waste Inert waste is waste which is neither chemically nor biologically reactive and will not decompose or only very slowly. Examples of this are sand and concrete. This has particular relevance to landfills as inert waste typically requires lower disposa ...

, waste which is neither chemically nor biologically reactive and will not decompose *

Inert ingredient An excipient is a substance formulated alongside the active ingredient of a medication, included for the purpose of long-term stabilization, bulking up solid formulations that contain potent active ingredients in small amounts (thus often referred ...

, a component of the excipient of a pharmaceutical drug * Inert matter, a matter that is not alive. See Life#Range of tolerance *

Inert prime In mathematics, the interplay between the Galois group ''G'' of a Galois extension ''L'' of a number field ''K'', and the way the prime ideals ''P'' of the ring of integers ''O'K'' factorise as products of prime ideals of ''O'L'', provides one ...

, a type of behaviour of a prime under an algebraic extension *Inert munition, a

dummy round A dummy round or drill round is a round that is completely inert, i.e., contains no primer, propellant, or explosive charge. It is used to check weapon function, and for crew training. Dummy ammunition is distinct from "practice" ammunition, w ...

that does not contain any energetic material

See also