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Definition of Dead reckoning
1. Noun. An estimate based on little or no information.
Exact synonyms: Guess, Guessing, Guesswork, Shot
Generic synonyms: Approximation, Estimate, Estimation, Idea
Derivative terms: Guess, Guess, Guess
Generic synonyms: Approximation, Estimate, Estimation, Idea
Derivative terms: Guess, Guess, Guess
2. Noun. Navigation without the aid of celestial observations.