different between orbit vs spectrum

English

Alternative forms

• (eye socket) orbita

Etymology

From Middle English orbite, orbita, from Latin orbita (“course, track, impression, mark”).

Pronunciation

• (Received Pronunciation) IPA^(key): /???.b?t/
• (General American) IPA^(key): /???.b?t/
• Rhymes: -??(?)b?t

Noun

orbit (countable and uncountable, plural orbits)

1. (astronomy) A circular or elliptical path of a celestial object or spacecraft around a star, planet, or moon, especially a periodic elliptical revolution.

   Hyponyms: Clarke orbit, graveyard orbit, Hohmann transfer orbit, last photon orbit, Lissajous orbit, low Earth orbit, lunar orbit, Lyapunov orbit, Molniya orbit, osculating orbit, parking orbit, subsynchronous orbit, synchronous orbit

   1. One complete circuit round an orbited body.

   2. (uncountable) The state of moving in an orbit.
   3. (physics) The path of an electron around an atomic nucleus.
   4. (pinball) A path for the ball on the outer edge of the playfield, usually connected so that the ball entering in one end will come out of the other.
2. A sphere of influence; an area or extent of activity, interest, or control.

3. (anatomy) The bony cavity in the skull of a vertebrate containing the eyeball.

   Synonyms: eye socket, cranial orbit

   1. (zoology) The area around the eye of a bird or other animal.
4. (mathematics) A collection of points related by the evolution function of a dynamical system.
5. (geometry, group theory) The subset of elements of a set X to which a given element can be moved by members of a specified group of transformations that act on X.
6. (informal) A state of increased excitement, activity, or anger.

Usage notes

When referring to astronomical orbits, "in orbit" and "on orbit" have somewhat different meanings. In general, a body is said to be "in orbit" if it is in freefall going around another body; while something happens "on orbit" if it occurs aboard an orbiting spacecraft. Thus one might say, "The space capsule is in orbit, and the astronauts inside are performing experiments on orbit."

Derived terms

Translations

Verb

orbit (third-person singular simple present orbits, present participle orbiting, simple past and past participle orbited)

1. (astronomy) To circle or revolve around another object.
   1. To place an object (e.g. a satellite) into an orbit around a planet.

      Synonym: launch

2. To move around the general vicinity of something.

   Synonyms: circumambulate, tag along

3. To move in a circle.
4. (transitive) To center (around).
5. (transitive, dating) To continue to follow and/or engage with someone via social media after breaking up with them.

Antonyms

• deorbit

Translations

References

• “orbit”, in Lexico, Dictionary.com; Oxford University Press, 2019–present.
• “orbit”, in Merriam–Webster Online Dictionary, (Please provide a date or year).

See also

• satellite

Anagrams

• tribo-

Romanian

Pronunciation

• IPA^(key): [or?bit]

Verb

orbit

1. past participle of orbi

English

Etymology

From Latin spectrum (“appearance, image, apparition”), from speci? (“look at, view”). Doublet of specter. See also scope.

Pronunciation

• (Canada, UK) IPA^(key): /?spekt??m/
• (US) IPA^(key): /?sp?kt(?)??m/
• Rhymes: -?kt??m

Noun

spectrum (plural spectra or spectrums)

1. A range; a continuous, infinite, one-dimensional set, possibly bounded by extremes.
2. Specifically, a range of colours representing light (electromagnetic radiation) of contiguous frequencies; hence electromagnetic spectrum, visible spectrum, ultraviolet spectrum, etc. [from later 17th c.]
   • 2010 October 30, Jim Giles, Jammed!, in New Scientist,

     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.

3. (psychology, education) The autism spectrum.
4. (chemistry) The pattern of absorption or emission of radiation produced by a substance when subjected to energy (radiation, heat, electricity, etc.).
5. (mathematics, linear algebra) The set of eigenvalues of a matrix.
6. (mathematics, functional analysis) Of a bounded linear operator A, the set of scalar values ? such that the operator A—?I, where I denotes the identity operator, does not have a bounded inverse; intended as a generalisation of the linear algebra sense.
7. (abstract algebra, algebraic geometry) The set, denoted Spec(R), of all prime ideals of a given ring R, commonly augmented with a Zariski topology and considered as a topological space.

   Hyponym: Stone space

8. (obsolete) Specter, apparition. [from early 17th c.]
9. The image of something seen that persists after the eyes are closed.

Derived terms

• cepstrum
• light spectrum
• spectro-
• spectrum disorder
• political spectrum

Related terms

• spectral

Translations

Anagrams

• cepstrum, crumpets

Dutch

Etymology

From Latin spectrum (“appearance, image, apparition”), from speci? (“look at, view”).

Pronunciation

Noun

spectrum n (plural spectrums or spectra, diminutive spectrumpje n)

1. spectrum

Derived terms

• spectraal
• spectroscoop

Latin

Etymology

From spec(i?) (“look at, behold”) +? -trum. Confer with speculum.

Pronunciation

• (Classical) IPA^(key): /?spek.trum/, [?s?p?kt?????]
• (Ecclesiastical) IPA^(key): /?spek.trum/, [?sp?kt??um]

Noun

spectrum n (genitive spectr?); second declension

1. appearance, image
2. apparition, specter

Declension

Second-declension noun (neuter).

Related terms

• speci?
• specti?
• spect?

Descendants

• Catalan: espectre
• Dutch: spectrum
• English: spectre, specter; spectrum
• French: spectre
• German: Spektrum
• Irish: speictream
• Italian: spettro
• Portuguese: espectro
• Romanian: spectru
• Russian: ?????? (spektr)
• Spanish: espectro
• Swedish: spektrum

References

• spectrum in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• spectrum in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• spectrum in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
• spectrum in Gaffiot, Félix (1934) Dictionnaire illustré Latin-Français, Hachette