Annular

There are three types of a solar eclipse: total, partial, and annular.

The eclipse type that occurs when the Moon is at its farthest distance from the Earth is an annular eclipse. The Moon then appears too small to completely block out the disk of the Sun.

Sections of East Africa, the Indian Ocean and China will witness an annular eclipse, in which the moon passes directly in front of the sun but leaves a ring of sunlight flaring around its edge.

annular fiber

If anybody snickers, put 'em in their place by reminding them that the annular wing is a very old aeronautical principle.

The capsule in both families is spherical, with a bistratose wall; the outer cell layer usually bears nodular thickenings[…]; the inner layer (of nearly equally large cells) lacks the regular semiannular or annular thickenings of most other leafy liverworts[…]