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Ring-shaped structure
Answer for the clue "Ring-shaped structure ", 7 letters:
annulus
Alternative clues for the word annulus
Word definitions for annulus in dictionaries
WordNet
Word definitions in WordNet
n. a toroidal shape; "a ring of ships in the harbor"; "a halo of smoke" [syn: ring , halo , anulus , doughnut , anchor ring ] (Fungi) remnant of the partial veil that in mature mushrooms surrounds the lower part of the stem [also: annuli (pl)]
Wikipedia
Word definitions in Wikipedia
The annulus of an oil well is any void between any piping, tubing or casing and the piping, tubing, or casing immediately surrounding it. It is named after the corresponding geometric concept . The presence of an annulus gives the ability to circulate fluid ...
Wiktionary
Word definitions in Wiktionary
n. 1 A ring- or donut-shaped area or structure. 2 (context geometry English) The region in a plane between two concentric circles of different radius. 3 (context topology English) Any topological space homeomorphic to the region in a plane between two concentric ...
Douglas Harper's Etymology Dictionary
Word definitions in Douglas Harper's Etymology Dictionary
1560s, medical, from misspelling of Latin anulus "little ring, finger ring," a diminutive of anus (see anus ).
Usage examples of annulus.
The annulus, the ring, between inner and outer hull is about fifteen feet on the top and bottom, about twenty-five feet on the sides.
The annulus was filled with tanks and air bottles and batteries and piping, all leaving more room inside the pressure hull.
Pendeen switched off the torch and straightened, looking down at the annulus of still-glowing metal.
And the Thing Below rose up from the white-hot annulus around its pit.
In an eye blink it became a broad annulus of scintillating light around a disk of blackness now bespecked with stars.
He was inclined to sit there for a few minutes with his buttocks cupped in the luxuriously polished wooden annulus of the shite-hole, and to savor this triumph, just as the late Samuel Pepys had taught him to do in the case of urination.
They grew legs, and around them sprang up an annulus of fire, which they survived, turning.
A distinct operculum is usually detached by the help of the annulus, and its removal may leave the mouth of the capsule widely open.
Its living-room was an immense annulus of glass from which, by merely moving along its circular length, any desired view could be had.
That part of the veil which breaks away from the cap, called the secondary veil, forms the annulus or ring.
The circular annulus on which the cut face of the donut half sits, as measured by Cst, represents the lunar surface where the shield intersects the ground.
The corresponding foundation for a communications satellite was essentially a thin steel annulus, a flat, sturdy donut that invariably looked too light for its job.