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annulus

PRIMARY MEANINGS OF: annulus

1
n
a toroidal shape
2
n
(Fungi) a remnant of the partial veil that in mature mushrooms surrounds the stem like a collar
FULL DEFINITIONS OF: annulus
1

n a toroidal shape

Synonyms:
anchor ring, doughnut, halo, ring
Types:
fairy circle, fairy ring
a ring of fungi marking the periphery of the perennial underground growth of the mycelium
Type of:
toroid
the doughnut-shaped object enclosed by a torus
2

n (Fungi) a remnant of the partial veil that in mature mushrooms surrounds the stem like a collar

Synonyms:
skirt
Type of:
plant part, plant structure
any part of a plant or fungus
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