dead-reckon

[ ded-rek-uh n ]
/ ˈdɛdˈrɛk ən /

verb (used with object) Navigation.

to calculate (one's position) by means of dead reckoning.

Origin of dead-reckon

by back formation

Related forms

dead-reck·on·er, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019