Noun: dead reckoning
- Navigation without the aid of celestial observations
"When their GPS failed, the sailors relied on dead reckoning to estimate their position"
- An estimate based on little or no information
"The project timeline was pure dead reckoning";
- guess, guesswork, guessing, shot
Derived forms: dead reckonings
Type of: approximation, estimate, estimation, idea, navigation, pilotage, piloting
Encyclopedia: Dead reckoning