Annular vs. Annulus — What's the Difference?

Shaped like or forming a ring.

A ringlike figure, part, structure, or marking, such as a growth ring on the scale of a fish.

Pertaining to, or having the form of, a ring; ring-shaped; in the shape of an annulus.

A ring or group of thick-walled cells around the sporangia of many ferns that functions in spore release.

Banded or marked with circles.

The ringlike remains of a broken partial veil, found around the stipes of certain mushrooms.

Pertaining to, or having the form of, a ring; forming a ring; ringed; ring-shaped; as, annular fibers.

(Mathematics) The figure bounded by and containing the area between two concentric circles.

Banded or marked with circles.

A ring- or donut-shaped area or structure.

Shaped like a ring

(geometry) The region in a plane between two concentric circles of different radii.

(topology) Any topological space homeomorphic to the region in a plane between two concentric circles of different radius.

(astronomy) The ring of the sun not covered by the moon in an annular solar eclipse.

(botany) Structure in a fern that consists of differentially thick-walled cells on a sporangium that bend and distort as a result of drying.

(mycology) The membranous remnants of a partial veil which leaves a ring on the stem of a mushroom.

(oil and gas production) The space contained between the centre well bore and any external tubing. Sometimes used for separated gas flow.

A ring; a ringlike part or space.

A space contained between the circumferences of two circles, one within the other.

Ring-shaped structures or markings, found in, or upon, various animals.

A toroidal shape;

(Fungi) remnant of the partial veil that in mature mushrooms surrounds the lower part of the stem