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accelerative

[ak-sel-uh-rey-tiv, -er-uh-tiv]
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adjective
  1. tending to accelerate; increasing the velocity of.
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Also ac·cel·er·a·to·ry [ak-sel-er-uh-tawr-ee, -tohr-ee] /ækˈsɛl ər əˌtɔr i, -ˌtoʊr i/.

Origin of accelerative

First recorded in 1745–55; accelerate + -ive
Related formsnon·ac·cel·er·a·tive, adjectivenon·ac·cel·er·a·to·ry, adjectiveun·ac·cel·er·a·tive, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018