| a version of velocity additive at relativistic speeds• speedup, speed-up n noun: Refers to person, place, thing, quality, etc | speed limit n noun: Refers to person, place, thing, quality, etc |
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| speed vi intransitive verb: Verb not taking a direct object--for example, "She jokes | speed vi intransitive verb: Verb not taking a direct object--for example, "She jokes |
speed record n noun: Refers to person, place, thing, quality, etc.
| in relativity, using traveler time instead of observer time• high speed n noun: Refers to person, place, thing, quality, etc | " Only for "speed up" sped v past p verb, past participle: Verb form used descriptively or to form verbs--for example, "the locked door," "The door has been locked |
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| speed n noun: Refers to person, place, thing, quality, etc | speed vi intransitive verb: Verb not taking a direct object--for example, "She jokes |
| a version of velocity additive at relativistic speeds• There are people waiting behind you | speed demon n noun: Refers to person, place, thing, quality, etc |
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| speed limit n noun: Refers to person, place, thing, quality, etc | pick up speed v expr verbal expression: Phrase with special meaning functioning as verb--for example, "put their heads together," "come to an end |
up to speed expr expression: Prepositional phrase, adverbial phrase, or other phrase or expression--for example, "behind the times," "on your own.