Etymograph

English

retroengine

From retro- + engine.

Formed from retro- + engine

Latin retrō ‘back, backwards, behind’

English retro-

Proto-Indo-European *ǵenh₁- ‘to produce, beget’

…

Latin ingenium ‘innate quality, nature; invention’

Old French engin ‘intelligence; ruse’

Anglo-Norman engine

Middle English engyn

English engine

Today it means

noun retrorocket

Sources

Sources: Wiktionary, “retroengine”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / retroengine

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