Propeller pitch
The distance the propeller travels in a solid medium
Pitch ratio
The mean pitch divided by the diameter of the propeller
Skew
Twisting of propeller blade
Leading edge
The edge of the propeller blade adjacent to the forward end of the hub
Trailing edge
The edge of the propeller blade opposite the leading edge
Blade face
The pressure side, pitch side and after side of the blade
Root
The part of the propeller blade closest to the centre
Hub/boss
The solid cylinder which all propeller blades are attached to
Blade area
Ratio of the total area of the propeller disc