Glossary
What is dead reckoning?
Navigating by calculation: from a known starting point, a heading, an airspeed, the forecast wind and the time flown, the pilot works out where the airplane should now be. In practice it is used alongside pilotage rather than instead of it.
That is the whole entry for now. The longer version, with the mechanics and worked examples, is still to be written. See autorotation for how those read once they exist.