diagonal /dī-agˈə-nəl/

1. Through the corners, or joining two vertices that are not adjacent, of a polygon
2. (of a plane) passing through two edges (not adjacent) of a polyhedron
3. Slantwise

A straight line or plane so drawn

diagˈonally adverb

diagonal scale noun

A scale for laying down small fractions of the unit of measurement, by lengthwise parallel lines intersected by two sets of parallel lines, crosswise and oblique

• three-piled
• three-piles
• threeping
• threepit
• three-plies
• three-ply
• three-point landing
• three-point landings
• three-point turn
• three-point turns
• twayblade
• twayblades
• tweak
• tweaked
• tweaker
• tweakers
• tweaking
• tweakings
• tweaks
• twee
• tweed
• tweedier
• tweediest
• tweedily
• tweediness