American Heritage Dictionary of the English Language, 5th Edition
From Latinānulāris (“ring-shaped”); (possibly through French annulaire), from ānulus (“ring”).
Annular Sentence Examples
The amplitude of the phase is 1Ã¯¿½1 magnitude; and the absence of any stationary interval at minimum proves the eclipse to be partial, not annular.
From 1848 to 1878 it was but with few interruptions employed for observations of nebulae (see Nebula); and many previously unknown features in these objects were revealed by it, especially the similarity of "annular" and "planetary" nebulae, and the remarkable "spiral" configuration prevailing in many of the brighter nebulae.