Definition of dead reckoning in English:

dead reckoning

Line breaks: dead reck¦on|ing

noun

[mass noun]
  • The process of calculating one’s position, especially at sea, by estimating the direction and distance travelled rather than by using landmarks or astronomical observations.
    More example sentences
    • In dead reckoning you estimate distance traveled along a given heading as a function of velocity and elapsed time.
    • It was the Greeks who pioneered modern methods of navigating by calculation rather than by dead reckoning.
    • At first, crews had to rely on dead reckoning - estimating position by speed, flying time and compass.

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