retardation.
The act of retarding or delaying; hindrance.
Meaning & usage
The act of retarding or delaying; hindrance. The distance by which one wave is behind another.
The act of retarding or delaying; hindrance. The act of diminishing the rate of speed.
The act of retarding or delaying; hindrance. A decrease in the speed of telegraph signalling.
The extent to which anything is retarded; the result of any retarding or delay; mental, social, or physical slowness.
Ellipsis of mental retardation.
Extreme stupidity.
That which retards; an obstacle; an obstruction.
Deceleration; reduction in the magnitude of velocity.
A suspension which resolves upwards.
Where this word comes from
Etymology tree Proto-Italic *wre- Latin re- Proto-Indo-European *tr̥h₂-d-o- Proto-Italic *tardo- Latin tardus Latin retardō Proto-Indo-European *-tis Proto-Indo-European *-Hō Proto-Indo-European *-tiHō Proto-Italic *-tiō Latin -tiō Latin retardātiōlbor. English retardation Learned borrowing from Latin retardātiō.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.