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bulb US English

A rounded underground storage organ present in some plants, notably those of the lily family, consisting of a short stem surrounded by fleshy scale leaves or leaf bases and lying dormant over winter

bulb fly US English

A hoverfly that resembles a bumblebee, with larvae that are pests of daffodil bulbs

dry bulb US English

An ordinary exposed thermometer bulb, especially as used in conjunction with a wet bulb

wet bulb US English

One of the two thermometers of a psychrometer, the bulb of which is enclosed in wetted material so that water is constantly evaporating from it and cooling the bulb

light bulb US English

A glass bulb inserted into a lamp or a socket in a ceiling, that provides light by passing an electric current through a filament or a pocket of inert gas

pearl bulb US English

An electric light bulb with translucent glass

light-bulb moment US English

A moment of sudden realization, enlightenment, or inspiration

compact fluorescent light bulb US English

A low-wattage energy-efficient fluorescent light bulb designed for use in standard lighting equipment such as table lamps

flashbulb US English

A light bulb that flashes in order to illuminate a photographic subject, of a type that is used only once

fluorescent tube US English

A glass tube that radiates light when phosphor on its inside surface is made to fluoresce by ultraviolet radiation from mercury vapor

fluorescent bulb in fluorescent tube US English

A glass tube that radiates light when phosphor on its inside surface is made to fluoresce by ultraviolet radiation from mercury vapor


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