coroa circular — meaning in English
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English meaning
- annulus noun A shape or object like a ring, with an open space in the middle.
Senses
coroa circular is used for these senses in English:
- annulus (botany) A structure surrounding a sporangium (or part of it) which shrinks and causes it to rupture for spore dispersal; specifically, in a fern: a structure around about two-thirds of the sporangium consisting of differentially thick-walled cells which dry and distort the sporangium; and in a moss: a complete ring of cells around the tip of the sporangium which dissolves to cause the tip to detach.
annulus — full definition
- noun A shape or object like a ring, with an open space in the middle.
- noun (anatomy) A ring of tough tissue, especially the one around a heart valve opening that its flaps and muscles attach to.
- noun A bright ring of light around a dark body in the sky, as seen for example when the Moon passes in front of the Sun but does not fully cover it.
- noun A part around a fern or moss spore case that shrinks and splits it open to release the spores.
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