nonagesimal

== English == === Noun === nonagesimal (plural nonagesimals) (astronomy) The middle to highest point of a part of an ecliptic that is above the horizon at any period of time. === Adjective === nonagesimal (not comparable) Of or relating to the ninetieth degree or to a nonagesimal. ==== References ==== "nonagesimal": Collins English Dictionary - Complete & Unabridged 10th Edition. Article.