spectrum means A range; a continuous, infinite, one-dimensional set, possibly bounded by extremes. It carries an Arena rating of 1916, earned across 19 head-to-head judged battles.
Among words judged in Lexicurio's Arena, spectrum ranks #9 of 17,123 for Most Malleable Words, #179 of 17,111 for Most Sublime Words, #359 of 17,113 for Most Elegant Words, #485 of 17,116 for Words That Escaped Their Books.
spectrum is pronounced /ˈspɛktɹəm/.
Why “spectrum” is a great word
A continuous sequence or range of related qualities, ideas, or phenomena, often bounded by extremes, such as the band of colors observed when white light is dispersed. From the Latin spectrum ("appearance, image, apparition"), from specere ("to look at"). First used scientifically in English in 1671 by Isaac Newton to describe the optical phenomenon. Unlike a "range" (which suggests a simple span between two points) or a "gradient" (which denotes a gradual change in a single property), a spectrum implies a continuous, multi-faceted continuum of subtle variations. It is the concrete arc of red melting into orange, then yellow, green, blue, and violet; it is the silent, shifting landscape of human opinion between dogmatic poles; it is the entire invisible orchestra of radio waves and x-rays thrumming through empty space—the fundamental principle that nature abhors a binary and revels in the infinite gradations in between.
noun
- A range; a continuous, infinite, one-dimensional set, possibly bounded by extremes.e.g.“Near-synonyms: sliding scale, continuum”
- Specifically, a range of colours representing light (electromagnetic radiation) of contiguous frequencies; hence electromagnetic spectrum, visible spectrum, ultraviolet spectrum, etc.e.g.“Current 3G technologies can send roughly 1 bit of data - a one or a zero - per second over each 1 Hz of spectrum that the operator owns.”
- The autism spectrum.e.g.“He punctuated his words with a look into my eyes that might have been read as threatening or menacing by anyone who was not on the spectrum. But I am on the spectrum, and so I stared back at him.”
- The pattern of absorption or emission of radiation produced by a substance when subjected to energy (radiation, heat, electricity, etc.).
- The set of eigenvalues of a matrix.
- Of a bounded linear operator A, the set of scalar values λ such that the operator A—λI, where I denotes the identity operator, does not have a bounded inverse; intended as a generalisation of the linear algebra sense.
- An abstract object in mathematics created from a commutative ring R and denoted operatorname Spec(R) or operatorname SpecR and said to be the spectrum of R; useful in the study of such rings for providing a geometric object which encodes many of the properties R, and in modern geometry for generalizing the notion of an algebraic variety to that of an affine scheme. Formally, the set of all prime ideals R equipped with the Zariski topology and augmented with a sheaf of rings called the structure
- Specter, apparition.
- The image of something seen that persists after the eyes are closed.
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