evection etymology

Etymology:

  • From Latin evectiō, evectiōnis ("a carrying out, removal, transportation"), from evehō, evehere ("to carry out, remove, or transport")
  • Ultimately from Proto-Indo-European *wegh- ("to transport, carry")

Meaning and Origin:

Evection is an astronomical term that refers to a periodic variation in the orbit of a celestial body caused by the gravitational pull of another body. Specifically, it is:

  • A perturbation in the lunar orbit due to the gravitational pull of the Sun.
  • One of the major lunar inequality terms causing a variation in the lunar orbit.
  • A periodic fluctuation in the Moon's motion along its orbit, resulting in a monthly variation of approximately 1° 21'.
  • Caused by the Sun's gravity which, due to the Moon's elliptical orbit, exerts a varying force on the Moon.

Evection was first described by the ancient Greek astronomer Hipparchus in the 2nd century BCE and was later explained by Isaac Newton in his work "Principia" in the 17th century.

evection relate terms

  • always

    Etymology Old French alveis Latin alvus belly womb cavity Proto Indo European

  • away

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  • convection

    Etymology The word convection comes from the Latin word convectio which means a ca

  • convey

    Etymology Late Middle English in the sense institute or enforce from Old Frenc

  • convex

    Etymology From Latin convexus past participle of convehere meaning to carry toge

  • convoy

    Etymology The word convoy originates from the Old French word convoi which in turn

  • deviate

    Etymology The word deviate originates from the Latin verb devius meaning out of t

  • devious

    Etymology The word devious comes from the Latin word devius meaning out of the way

  • envoy

    Etymology The word envoy stammt from the Old French word enveier meaning to send

  • evection

    Etymology From Latin evectiō evectiōnis a carrying out removal transportation

  • earwig

    Etymology The word earwig is derived from the Old English word earwige which litera

  • graywacke

    Etymology The term graywacke is derived from the German word Grauwacke which itself i

  • impervious

    Etymology Late Latin imperspicuus French impervious Meaning Impermeable not

  • invective

    Etymology The word invective comes from the Latin word invehi which means to carry

  • inveigh

    Etymology of Inveigh The word inveigh traces its roots back to the Old French word e

  • invoice

    Etymology The word invoice comes from the Old French word inventer meaning to find

  • Norway

    Etymology and Meaning The etymology of Norway is uncertain but there are two primary the

  • obviate

    Etymology Latin obviare meaning to go to meet to oppose Meaning To make someth

  • obvious

    Obvious Etymology Middle English obviouse from Latin obvius meaning in the way

  • ochlocracy

    Etymology Ochlocracy comes from two Greek words Ochlos mob or crowd Kratos po

  • ogee

    Etymology Old French orge 2nd half of 14th century Middle English oge late 14th ce

  • pervious

    Etymology The word pervious comes from the Late Latin pervius meaning passable or

  • previous

    Etymology The word previous comes from the Old French word previeus which is derived

  • provection

    Etymology Pro vection Meaning The act of conveying or transporting something

  • quadrivium

    Etymology The term quadrivium is derived from the Latin phrase quadrivium scientiaru

  • thalweg

    Etymology German Thal valley Weg way Meaning The deepest part of a river

  • trivia

    Etymology and Meaning The word trivia originates from the Latin word trivium which m

  • trivial

    Etymology The term trivial is derived from the Latin word trivialis which means per

  • trivium

    Etymology Latin trivium from tri three via way Literally three way crossroads

  • vector

    Etymology The word vector comes from the Latin word veho which means to carry In

  • vehemence

    Etymology Latin vehementia from vehemēns strong impetuous eager Indo European

  • vehement

    Etymology French véhément Latin vehemens violent impetuous ardent Proto Indo E

  • vehicle

    Etymology Vehicle is derived from the Latin word vehiculum which means that which c

  • viaduct

    Etymology The word viaduct is derived from the Latin words via road way and ducer

  • viatic

    Etymology The word viatic comes from the Latin word viaticus which means provision

  • viaticum

    Etymology Latin viaticum From via road aticum belonging to Meaning Pro

  • vogue

    Etymology Late Middle English from Middle French vogue from Old French voguer to row

  • voyage

    Etymology The word voyage comes from the Old French word voiage which itself derives

  • wacke

    Etymology Wack adjective 1970s African American Vernacular English from wack noun

  • waggish

    Etymology and Origin of Waggish The word waggish is derived from the Middle English

  • wagon

    Etymology Middle English waggon Old English wægn Proto Germanic wagnaz Proto Indo

  • wain

    Etymology The word wain is derived from the Old English word wæn which meant a hors

  • wall eyed

    Etymology Wall eyed is a compound word derived from two Old English terms Wealh

  • weigh

    Etymology From Middle English weyen from Old English wēgan from Proto Germanic wēga

  • weight

    Etymology The word weight comes from the Old English word wiht which means a measur

  • wiggle

    Etymology The word wiggle is thought to have originated from the Old English word wagg

  • save

    Etymology Old French sauve Latin salvus whole safe Meaning To protect or

  • equivocal

    Etymology The word equivocal is derived from the Latin word aequus meaning equal

  • zilch

    Etymology and Origin The word zilch originated in the German language where it was fir

  • suffer

    Etymology Old French sofrir Latin sufferre Proto Indo European kwe bher kwe bhr i

  • carpenter

    Etymology The word carpenter comes from the Old French word carpentier which in turn

  • clever

    Etymology Origin Latin clevere meaning able to steal Root Proto Indo European k

  • admonish

    Etymology From Old French admonester from Medieval Latin admonestāre from Latin admo

  • Abyssinia

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  • anxious

    Etymology and Meaning of Anxious Etymology The word anxious derives from the Latin