dead reckoning

Definitions of dead reckoning
1

n navigation without the aid of celestial observations

Type of:
navigation, pilotage, piloting
the guidance of ships or airplanes from place to place

n an estimate based on little or no information

Synonyms:
guess, guessing, guesswork, shot
Type of:
approximation, estimate, estimation, idea
an approximate calculation of quantity or degree or worth

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