Annulus
Annulus (from Latin anulus "small ring") stands for:
- Annulus (skin) , ring-shaped fold of skin
- Annulus (muscle) , a ring-shaped muscle field, for example in the nautilus or beard worms
- Annulus (mycology) , ring or cuff on the stem of cap mushrooms
- Annulus (deep drilling technique) , the space between the drill string or the casing and the surrounding formation or another casing
See also:
Wiktionary: Annulus - explanations of meanings, word origins, synonyms, translations