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spectrum British & World English

A band of colours, as seen in a rainbow, produced by separation of the components of light by their different degrees of refraction according to wavelength

spectrum English Thesaurus

a broad spectrum of opinion

the spectrum in spectrum British & World English

The entire range of wavelengths of electromagnetic radiation

line spectrum British & World English

An emission spectrum consisting of separate isolated lines

mass spectrum British & World English

A distribution of ions shown by the use of a mass spectrograph or mass spectrometer

atomic spectrum British & World English

The spectrum of frequencies of electromagnetic radiation emitted or absorbed during transitions of electrons between energy levels within an atom. Each element has a characteristic spectrum by which it can be recognized

broad-spectrum British & World English

Denoting antibiotics, pesticides, etc. effective against a large variety of organisms

power spectrum British & World English

The distribution of the energy of a waveform among its different frequency components

autistic spectrum British & World English

A range of conditions (from autism to Asperger’s syndrome) characterized by difficulties in social interaction and communication and by restricted or repetitive patterns of thought and behaviour

emission spectrum British & World English

A spectrum of the electromagnetic radiation emitted by a source

spectrum analyser British & World English

A device for analysing a system of oscillations, especially sound, into its separate components

absorption spectrum British & World English

A spectrum of electromagnetic radiation transmitted through a substance, showing dark lines or bands due to absorption at specific wavelengths

continuous spectrum British & World English

An emission spectrum that consists of a continuum of wavelengths

electromagnetic spectrum British & World English

The range of wavelengths or frequencies over which electromagnetic radiation extends

autistic spectrum disorder British & World English

A developmental disorder characterized by difficulties in social interaction and communication and by restricted or repetitive patterns of thought and behaviour

Tarsius spectrum in spectral tarsier British & World English

A tarsier which has a tail with a long bushy tuft and a scaly base, native to Sulawesi

Vampyrum spectrum in false vampire British & World English

A large carnivorous bat that includes rodents, reptiles, and other small vertebrates among its prey: