(physics) The opposition offered by an electrical conductor to the flow of a current through itself, resulting in a conversion of electrical energy into heat and radiation. The SI derived unit of resistance is the ohm (Ω). Symbol: R.

(physics) A resistance to the flow of heat across the interface between liquid helium and a solid that produces a temperature discontinuity.

plural of tax resister

(physics) The action of friction that slows something moving through air; drag.

that slows the penetration of water (but is not waterproof)

Capable of withstanding fire, either permanently or for a pre-determined time.

(euphemistic or humorous) Overweight, fat.

(education, UK) A school subject combining elements of woodwork, metalwork and plastic-work, sometimes a module of a larger design and technology syllabus.

(law) The crime of obstructing or opposing a police officer who is making an arrest.

A rheostat consisting of an open frame on which are stretched spirals of wire, which, being freely exposed to the air, radiate heat rapidly.