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  • noun

Synonyms for annulus

a toroidal shape

(Fungi) a remnant of the partial veil that in mature mushrooms surrounds the stem like a collar

References in periodicals archive ?
where j refers to the ground slice, i refers to the annular region under calculation, (i - 1) and (i + 1) refer to the adjacent annular regions, C is the thermal capacitance, R is the thermal resistance between two adjacent annular regions, T is the current mean temperature, and [T.
We consider the fully developed, steady laminar free convective heat and mass transfer flow of an incompressible, viscous, chemically reacting fluid through a porous medium in an annular region between two vertical co-axial circular pipes in the presence of constant heat source in the fluid region.
Tracer gas, together with solid particles, is entrained by the feed jets from the downward flowing annular region into the upward flowing core region.
The annular region between the pipe and the borehole should be filled with drilling mud to minimize the frictional loads on the pipe during pull back.
The annular region is essentially a pair of concentric cylinders.
In our signature recognition system, the pixel data is extracted from the annular regions of the signature images.
It is well documented that flow through a capillary can produce a depleted layer of particles near the walls [8] as well as depleted annular regions [9].