In an Annular Shape?
In Mathematics, an Annulus (Plural Annuli or Annuluses) Is the Region Between Two Concentric Circles. Informally, It Is Shaped Like a Ring or a Hardware...
In mathematics, an annulus (plural annuli or annuluses) is the region between two concentric circles. Informally, it is shaped like a ring or a hardware washer. The word "annulus" is borrowed from the Latin word anulus or annulus meaning 'little ring'. The adjectival form is annular (as in annular eclipse).
What is an annular structure?
Annulus: A ringlike structure, or any body part that is shaped like a ring. Applied to many small ring-shaped structures. The base of a heart valve that supports the valve's leaflets is called the annulus. A ring-shaped pancreas that encircles the duodenum is an annular pancreas.
What annular means?
: of, relating to, or forming a ring an annular skin lesion.