单词 | annulus |
释义 | annulus /an"yeuh leuhs/, n. , pl. annuli /-luy'/, annuluses. 1. a ring; a ringlike part, band, or space. 2. Geom. the space between two concentric circles on a plane. 3. the veil remnant on a mushroom stalk. See illus. under mushroom. 4. a growth ring, as on the cross section of a tree trunk, that can be used to estimate age. [1555-65; < L, var. of ANULUS, equiv. to an(us) ring + -ulus -ULE] |
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