Retrograde



GRE 蓝宝 Barron

解释

GRE 红宝书

• adj. 后退的; v. 倒退
• ［英］ adj. 后退的 ( moving in a backward direction) ; v. 倒退 ( to go back; retreat)
• ［记］ retro ( 向后) +grade ( 步伐, 走) -> 向后走 -> 后退

Webster Collegiate

I. adjective

• Etymology: Middle English, from Latin retrogradus, from retrogradi
• Date: 14th century
• 1.
  • a.
    • (1) having or being motion in a direction contrary to that of the general motion of similar bodies and especially east to west among the stars <Saturn is retrograde for another week><the retrograde motion of Mercury>
    • (2) having or being a direction of rotation or revolution that is clockwise as viewed from the north pole of the sky or a planet <a retrograde orbit>
  • b.
    • (1) moving, occurring, or performed in a backward direction <a retrograde step>
    • (2) occurring or performed in a direction opposite to the normal or forward direction of conduction or flow <retrograde ejaculation> — compare anterograde 1
  • c. contrary to the normal order ; inverse
• 2. tending toward or resulting in a worse or previous state
• 3. archaic contradictory, opposed
• 4. characterized by retrogression
• 5. affecting memories of a period prior to a shock or seizure <retrograde amnesia>
• 6. retro <retrograde fashion>
• ? retrogradely adverb

II. adverb

• Date: circa 1619
• backward, reversely

III. verb

• Etymology: Latin retrogradi, from retro- + gradi to go — more at grade
• Date: 1582
• transitive verb
  • archaic to turn back ; reverse
• intransitive verb
  • 1.
    • a. to go back ; retreat
    • b. to go back over or recapitulate something
  • 2. to decline to a worse condition

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