01 a. Pertaining to, or having the form of, a ring; forming a ring; ringed; ring-shaped; as, annular fibers.
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1.
Pertaining to, or having the form of, a ring; forming a ring; ringed; ring-shaped; as, annular fibers.
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2.
Banded or marked with circles.
Phrases & compounds
Annular eclipse —
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.