| 单词 | retrogration |
| 释义 | Definition of retrogration in English:retrogrationnoun ˌrɛtrə(ʊ)ˈɡreɪʃn
OriginMid 16th century; earliest use found in William Bourne (c1535–1582), writer on mathematics. Shortened from retrogradation. Compare retrogation. Definition of retrogration in US English:retrogrationnounˌrɛtrə(ʊ)ˈɡreɪʃn
OriginMid 16th century; earliest use found in William Bourne (c1535–1582), writer on mathematics. Shortened from retrogradation. Compare retrogation. |
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