retrograde
Americanadjective
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moving backward; having a backward motion or direction; retiring or retreating.
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inverse or reversed, as order.
- Synonyms:
- backward
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Chiefly Biology. exhibiting degeneration or deterioration.
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Astronomy.
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moving in an orbit in the direction opposite to that of the earth in its revolution around the sun.
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appearing to move on the celestial sphere in the direction opposite to the natural order of the signs of the zodiac, or from east to west.
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Music. proceeding from the last note to the first.
a melody in retrograde motion.
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Archaic. contrary; opposed.
verb (used without object)
verb (used with object)
adjective
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moving or bending backwards
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(esp of order) reverse or inverse
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tending towards an earlier worse condition; declining or deteriorating
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astronomy
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occurring or orbiting in a direction opposite to that of the earth's motion around the sun Compare direct
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occurring or orbiting in a direction around a planet opposite to the planet's rotational direction
the retrograde motion of the satellite Phoebe around Saturn
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appearing to move in a clockwise direction due to the rotational period exceeding the period of revolution around the sun
Venus has retrograde rotation
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biology tending to retrogress; degenerate
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music of, concerning, or denoting a melody or part that is played backwards
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obsolete opposed, contrary, or repugnant to
verb
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to move in a retrograde direction; retrogress
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military another word for retreat
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Having a rotational or orbital movement that is opposite to the movement of most bodies within a celestial system. In the solar system, retrograde bodies are those that rotate or orbit in a clockwise direction (east to west) when viewed from a vantage point above the Earth's north pole. Venus, Uranus, and Pluto have retrograde rotational movements. No planets in the solar system have retrograde orbital movements, but four of Jupiter's moons exhibit such movement.
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Having a brief, regularly occurring, apparently backward movement in the sky as viewed from Earth against the background of fixed stars. Retrograde movement of the planets is caused by the differing orbital velocities of Earth and the body observed. For example, the outer planets normally appear to drift gradually eastward in the sky in relation to the fixed stars; that is, they appear night after night to fall a little farther behind the neighboring stars in their westward passage across the sky. However, at certain times a particular planet appears briefly to speed up and move westward a bit more quickly than the neighboring stars. This happens as Earth, in its faster inner orbit, overtakes and passes the planet in its slower outer orbit; the appearance of moving counter to its usual eastward drift is thus simply the result of perspective as seen from Earth.
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Compare prograde
Other Word Forms
- retrogradation noun
- retrogradely adverb
- retrogradingly adverb
- unretrograded adjective
- unretrograding adjective
Etymology
Origin of retrograde
First recorded in 1350–1400; Middle English (adjective), from Latin retrōgradus going back, derivative of retrōgradī, equivalent to retrō- retro- + gradī “to step, go”; grade
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The dreamy vistas of domestic arts, which may have once seemed frivolous, passé, even politically retrograde for some, become a source of deep allure for people of different political stripes.
She points out the ongoing Jupiter retrograde and urges participants to “let the parts that are inquisitive drive you.”
From Los Angeles Times
Cubism was not only dominant in 1921, when Keck made his stylistically retrograde statue, but its genesis owes much to African art.
From Los Angeles Times
One of the ironies is that Tóth thinks the New World looks retrograde.
From Los Angeles Times
He filmed the new “Nosferatu” inside studios and outside castles in Eastern Europe, striving for authenticity in everything from 1830s peasant garb to retrograde psychological beliefs.
From Los Angeles Times
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.