chemical Definition

of, relating to, used in, or produced by chemistry or the phenomena of chemistry

acting or operated or produced by chemicals

detectable by chemical means

a substance obtained by a chemical process or producing a chemical effect

drug

engineering dealing with the industrial application of chemistry

a laser that uses a chemical reaction (such as combustion) as an energy source

a cosmetic procedure for the removal of facial blemishes and wrinkles that involves the application of a caustic chemical and especially an acid (such as alpha hydroxy acid) to the skin

tactical warfare using incendiary mixtures, smokes, or irritant, burning, poisonous, or asphyxiating gases

a weapon (such as mustard gas or sarin) used in chemical warfare

a chemical change that occurs when two or more substances combine to form a new substance

a variable group of symptoms (such as tachycardia, sweating, fatigue, nausea, trembling, and difficulty concentrating) that typically occur in susceptible individuals upon exposure to low concentrations of usually harmless chemicals —called also multiple chemical sensitivity syndrome