(countable) A pharmacologic agent administered to a person to prevent them from moving, as alternative for physical restraints such as belts, straitjackets, etc.

(journalism, environmentalism) Synonym of PFAS (“per- and poly- fluoroalkyl substance”)

(chemistry) Any single, pure, complex chemical substance produced in limited quantities by multistep processes.

plural of chemical pregnancy

A very early miscarriage, before reaching the stage of an embryo detectable by ultrasound.

Synonym of molecular formula / Any other formula used in chemistry.

a voltaic cell consisting of two metal electrodes connected by an electrolyte

(chemistry) Any one of the simplest chemical substances that cannot be decomposed in a chemical reaction. Chemical elements consist of atoms which have the same number of protons.

(chemistry) A process, typically involving the breaking or making of interatomic bonds, in which one or more substances are changed into others.

(chemistry) a symbolic representation of a chemical reaction; reactants are represented on the left, and products on the right