Meaning of “dead reckoning” in the English Dictionary

british dictionary

"dead reckoning" in British English

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dead reckoningnoun [ U ]

uk /ˌded ˈrek.ən.ɪŋ/ us /ˌded ˈrek.ən.ɪŋ/

Examples from literature

  • It goes without saying that mere dead reckoning, entirely unchecked by astronomical observations, would be insufficient for scientific purposes. 
  • The distance which we traveled day by day was at first determined by dead reckoning, to be verified later by observations for latitude. 
  • The position of the ship was found, and marked on the chart, and the "dead reckoning" compared with the result obtained by calculation. 
  • The sketch was made solely by dead reckoning. 
  • We had been six days out without an observation, and our dead reckoning naturally was uncertain. 

(Definition of “dead reckoning” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

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