2 definitions found From WordNet (r) 2.0 [wn]: annular adjective: shaped like a ring [syn: {annulate}, {annulated}, {circinate}, {circular}, {ringed}, {ring-shaped}, {doughnut-shaped}] From The Collaborative International Dictionary of English v.0.44 [gcide]: Annular \An"nu*lar\, adjective [L. annularis, fr. annulis ring: cf. F. annulaire.] 1. Pertaining to, or having the form of, a ring; forming a ring; ringed; ring-shaped; as, annular fibers. 2. Banded or marked with circles. {Annular eclipse} (Astron.), an eclipse of the sun in which the moon at the middle of the eclipse conceals the central part of the sun's disk, leaving a complete ring of light around the border.

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