a photoelectric device for intensifying faint astronomical images

A device in some early internal combustion engines that ignited the fuel/air mixture in a tube heated by a flame

An inflatable rubber tube inserted into the casing of a pneumatic tyre/tire.

A phototube in which an electric current flows when a certain illumination is reached; used as a relay

(electronics) A type of electron tube that controls electron current through vacuum between electrodes within a sealed container, usually of glass or metal and often designed to be easily installed in and removed from the equipment in which it is used.

(physics) Any of several electronic devices that control electron current through vacuum, gas or vapor between electrodes within a sealed container, usually of glass or metal and often designed to be easily installed in and removed from the equipment in which it is used.

Alternative letter-case form of Fallopian tube

(aviation) A pressure measuring instrument used to measure fluid flow velocity, especially used to determine the airspeed of an aircraft.

(medicine, neonatal medicine) A multi-lumen orogastric tube that functions as a sump tube with one lumen providing suction and the other providing irrigation or venting. It is safer than conventional suction because it reduces the risk of adherence to the gastric lining and subsequent damage.

(chemistry) An item of glass laboratory equipment like a funnel consisting of a long, fine tube and a bulbous reservoir at the top. Used for introducing liquids, with care, into a solution.