annular

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annular

[′an·yə·lər]
(mining engineering)
The space between the casing and wall of a hole or between a drill pipe and casing.

annular

Said of a ring-shaped structure or object.
References in periodicals archive ?
It is entirely possible that an annular eclipse may appear as annular outside its path of annularity, where it is essentially partial.
The north tip of the path of annularity will touch India first at 8.801 N longitude, 76.656 E latitude, about 10 km south of Kollam and about 2 km south west of a nearby place Paravur in Kerala.
Covering 95 per cent of the Sun's surface, Monday's eclipse will cause a significant drop in light levels under the path of annularity. Sometimes, birds begin to roost and the shadow itself can be glimpsed.
For example, federal budget process in 1995 represents a worst case scenario; the norm of annularity was fundamentally shattered, major segments of the government were temporarily shut down and the Secretary of Treasury was forced to extraordinary actions to avoid a default on U.
At the moment of complete "annularity," when the silhouette of the moon is fully superimposed on the sun, the thin crescent of light on the screen suddenly became a perfect ring, a breathtaking sight.
The annularity of the assumed age mark was demonstrated for each age class by plotting monthly mean measurements for all ages pooled into three inclusive groups.
So it does, but Pettigrew and Collins edited a total of seventy-four uncollected, fugitive, and previously unpublished poems and fragments; when one adds these to Bright's reckoning, one arrives (with the aid of a pocket calculator) at the less impressive annularity quotient of twenty-two per cent.
Wallace calls the concept "annularity" - which means ringlike, the infinite downward spiral toward shame, alienation and abjection - and it's the novel's skeleton key.
It appears as a small disk with a hint of annularity visible when viewed through a filter.
De Roy and his team observed what he described as an intermediate event, neither complete totality nor obvious annularity, with the Moon not quite covering the diameter of the Sun.
The eclipse is visible mostly over the Pacific, but the path of annularity crosses northwestern Australia, and the partial phase is visible in most of Melanesia, Australia, and New Zealand.
Small binoculars and telescopes around 10cm aperture will show a hazy circular patch with no indication of annularity, while 25cm and upwards begin to show the shape familiar in popular images, particularly if used with a wide field eyepiece and OIII filter.