annulus
English Thesaurus
1. (Fungi) a remnant of the partial veil that in mature mushrooms surrounds the stem like a collar (noun.plant)
| part meronym | : | partial veil, |
| definition | : | membrane of the young sporophore of various mushrooms extending from the margin of the cap to the stem and is ruptured by growth; represented in mature mushroom by an annulus around the stem and sometimes a cortina on the margin of the cap (noun.plant) |
| domain category | : | fungi, fungus kingdom, kingdom fungi, |
| definition | : | the taxonomic kingdom including yeast, molds, smuts, mushrooms, and toadstools; distinct from the green plants (noun.plant) |
2. a toroidal shape (noun.shape)
| hypernym | : | toroid, |
| definition | : | the doughnut-shaped object enclosed by a torus (noun.shape) |
| hyponym | : | fairy circle, fairy ring, |
| definition | : | a ring of fungi marking the periphery of the perennial underground growth of the mycelium (noun.plant) |
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