annulus

As a letter s

is the letter s with a.

As a noun annulus is

a ring- or donut-shaped area or structure.

As a noun annulus

is a ring- or donut-shaped area or structure.

As a letter x is

the twenty-fourth letter of the.

As a symbol x is

voiceless velar fricative.

In geometry|lang=en terms the difference between squircle and annulus

is that squircle is (geometry) a geometrical shape defined by the boolean intersection of a square and a concentric circle whose diameter is greater than the length of the side of the square, but less than the length of the diagonal of the square while annulus is (geometry) the region in a plane between two concentric circles of different radius.

As nouns the difference between squircle and annulus

is that squircle is (mathematics) a closed curve having properties intermediate between those of a square and a circle while annulus is a ring- or donut-shaped area or structure.

As nouns the difference between lemniscate and annulus

is that lemniscate is the infinity symbol () while annulus is a ring- or donut-shaped area or structure.

As nouns the difference between annulus and cylinders

is that annulus is a ring- or donut-shaped area or structure while cylinders is .

As nouns the difference between annulus and taurus

is that annulus is a ring- or donut-shaped area or structure while Taurus is someone with a Taurus star sign.

As a proper noun Taurus is

: A constellation of the zodiac supposedly shaped like a bull and containing the star Aldebaran.

As nouns the difference between annulus and toroid

is that annulus is a ring- or donut-shaped area or structure while toroid is a surface generated by a closed curve (especially a circle) rotating about, but not intersecting or containing, an axis in its own plane.

As nouns the difference between annulet and annulus

is that annulet is a small ring while annulus is a ring- or donut-shaped area or structure.

In botany terms the difference between stomium and annulus

is that stomium is the region of a sporangium where dehiscence takes place while annulus is structure in a fern that consists of differentially thick-walled cells on a sporangium that bend and distort as a result of drying.

Indusm is likely misspelled.

Indusm has no English definition.

As a noun annulus is

a ring- or donut-shaped area or structure.