Amm or AMM may refer to:
Ammonia or azane is a compound of nitrogen and hydrogen with the formula NH3. The simplest pnictogen hydride, ammonia is a colourless gas with a characteristic pungent smell.
Amman (English pronunciation: /ɑːˈmɑːn/; Arabic: عمّان) is the capital and most populous city of Jordan, and the country's economic, political and cultural centre.
Ammonoids are an extinct group of marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda.
Ammunition (mass noun, commonly shortened to ammo) is the general term used for many kinds of propellant and projectile weapons — broadly, any expendable weapon that can be used in combat, including bombs, missiles, warheads, land mines, naval mines, and anti-personnel mines.
Ammonium nitrate is a chemical compound, the nitrate salt of the ammonium cation. It has the chemical formula NH4NO3, simplified to N2H4O3. It is a white crystal solid and is highly soluble in water.
Ammonia solution, also known as ammonium hydroxide, ammonia water, ammonical liquor, ammonia liquor, aqua ammonia, aqueous ammonia, or simply ammonia, is a solution of ammonia in water.
Ammonium chloride is an inorganic compound with the formula NH4Cl and a white crystalline salt that is highly soluble in water.
Ammonium sulfate (American English; ammonium tetraoxosulfate (VI) is the IUPAC-recommended spelling; and ammonium sulphate in British English), (NH4)2SO4, is an inorganic salt with a number of commercial uses.
An ammeter (from Ampere Meter) is a measuring instrument used to measure the current in a circuit. Electric currents are measured in amperes (A), hence the name.