Definition of dead reckoning in English:

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dead reckoning

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.
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.

For editors and proofreaders

Line breaks: dead reck¦on|ing

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