| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024ret•ro•grade /ˈrɛtrəˌgreɪd/USA pronunciation adj. - moving backward, as to an earlier condition:retrograde fashions.See -grad-.
WordReference Random House Unabridged Dictionary of American English © 2024ret•ro•grade (re′trə grād′),USA pronunciation adj., v., -grad•ed, -grad•ing. adj. - moving backward;
having a backward motion or direction;
retiring or retreating. - inverse or reversed, as order.
- Developmental Biology, Pathology, Biology[Chiefly Biol.]exhibiting degeneration or deterioration.
- Astronomy
- moving in an orbit in the direction opposite to that of the earth in its revolution around the sun.
- 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. Cf. direct (def. 25).
- Music and Danceproceeding from the last note to the first:a melody in retrograde motion.
- [Archaic.]contrary;
opposed.
v.i. - to move or go backward;
retire or retreat. - Developmental Biology, Pathology, Biology[Chiefly Biol.]to decline to a worse condition;
degenerate. - Astronomyto have a retrograde motion.
v.t. - [Archaic.]to turn back.
- Latin retrōgradus going back, derivative of retrōgradī, equivalent. to retrō- retro- + gradī to step, go; see grade
- Middle English (adjective, adjectival) 1350–1400
- 1.See corresponding entry in Unabridged withdrawing, receding.
- 2.See corresponding entry in Unabridged backward.
- 7.See corresponding entry in Unabridged withdraw, recede, retrocede.
Collins Concise English Dictionary © HarperCollins Publishers:: retrograde /ˈrɛtrəʊˌɡreɪd/ adj - moving or bending backwards
- (esp of order) reverse or inverse
- tending towards an earlier worse condition; declining or deteriorating
- occurring or orbiting in a direction opposite to that of the earth's motion around the sun
Compare direct - occurring or orbiting in a direction around a planet opposite to the planet's rotational direction
- appearing to move in a clockwise direction due to the rotational period exceeding the period of revolution around the sun: Venus has retrograde rotation
vb (intransitive)- to move in a retrograde direction; retrogress
Etymology: 14th Century: from Latin retrōgradī to go backwards, from gradi to walk, goˌretrograˈdation n ˈretroˌgradely adv |