different between annulus vs mycenoid
annulus
English
Etymology
Borrowed from Latin annulus.
Noun
annulus (plural annuluses or annuli)
- A ring- or donut-shaped area or structure.
- (geometry) The region in a plane between two concentric circles of different radii.
- (topology) Any topological space homeomorphic to the region in a plane between two concentric circles of different radius.
- (astronomy) The ring of the sun not covered by the moon in an annular solar eclipse.
- (botany) Structure in a fern that consists of differentially thick-walled cells on a sporangium that bend and distort as a result of drying.
- (mycology) The membranous remnants of a partial veil which leaves a ring on the stem of a mushroom.
- (oil and gas production) The space contained between the centre well bore and any external tubing. Sometimes used for separated gas flow.
Synonyms
- (topological space): cylinder
Hyponyms
- (ring-shaped structure): torus
Related terms
- annular
Derived terms
- annulate
- annulation
Translations
Latin
Pronunciation
- (Classical) IPA(key): /?a?n.nu.lus/, [?ä?n?????s?]
- (Ecclesiastical) IPA(key): /?an.nu.lus/, [??n?ulus]
Noun
?nnulus m (genitive ?nnul?); second declension
- Alternative form of ?nulus
Declension
Second-declension noun.
Descendants
- English: annulus, annulet
References
- annulus in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
- annulus in Harry Thurston Peck, editor (1898) Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers
- annulus in William Smith et al., editor (1890) A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin
annulus From the web:
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mycenoid
English
Adjective
mycenoid
- (mycology) Describes any mushroom with attached gills and a cone shaped cap and without a volva or annulus.
mycenoid From the web:
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