Nonagesimal :: Nonagesimal (a.) Of or pertaining to the ninetieth degree or to a nonagesimal.
Nonagesimal :: Nonagesimal (n.) The middle or highest point of the part of the ecliptic which is at any given moment above the horizon. It is the ninetieth degree of the ecliptic, reckoned from the points in which it is intersected by the horizon..
Nonagon :: Nonagon (n.) A figure or polygon having nine sides and nine angles.
Nonagrian :: Nonagrian (n.) Any moth of the genus Nonagria and allied genera, as the spindleworm and stalk borer..