Definition of dead reckoning in English:

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dead reckoning

Pronunciation: /ˈded ˈrek(ə)niNG/

noun

The process of calculating one’s position, especially at sea, by estimating the direction and distance traveled rather than by using landmarks, astronomical observations, or electronic navigation methods.
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

Syllabification: dead reck·on·ing

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