(pharmacology) A substance used as an anti-inflammatory painkiller, often shortened to ibuprofen.

An unsaturated fatty acid in which one or more of the double bonds has the trans orientation instead of the usual cis orientation.

The state in which the concentrations of acidic and basic ions in a solution neutralize each other.

(chemistry) A substance that shows the acidity or alkalinity of a solution by its colour.

(organic chemistry) Any hydroxy acid, of general formula RCH(OH)COOH, used in the cosmetic industry for their supposed property of reducing wrinkles.

(inorganic chemistry, Britain) Alternative spelling of fuming sulfuric acid

(inorganic chemistry) Any solution of sulfur trioxide in sulfuric acid; it contains pyrosulfuric acid, and is used in the manufacture of nitroglycerine etc.

(chemistry) any glycoside of an amino acid (linked via O-, N- or S-)

(chemistry) any glyco-amino-acid

(obsolete, chemistry) silicon tetrafluoride