A tubular layer that is shaped in a ring or circle, often used in anatomical or mechanical contexts.

वलयाकार आवरण

English Usage: The annular sheath around the nerve fibers provides insulation and protection.

Hindi Usage: नसों के फाइबर के चारों ओर वलयाकार आवरण सुरक्षा और इन्सुलेशन प्रदान करता है.