The Collaborative International Dictionary
Annularity
Annularity \An`nu*lar"i*ty\, n.
Annular condition or form; as, the annularity of a nebula.
--J. Rogers.
Wiktionary
annularity
n. The property of being annular.
Usage examples of "annularity".
His eyes were given an unnatural size and annularity by his thick round glasses.