tubercle

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tubercle

(to͞o`bərkyo͞ol') [Lat.,=little swelling], small, usually solid, nodule or prominence. In anatomy the term is applied to natural prominences in certain muscles, to nerve nuclei of the central nervous system, and to eminences on bones, especially in regions where muscles (through tendons) or bones (through ligaments) are attached. In dentistry tubercle refers to the cusp of a tooth. In pathology it describes small morbid growths, particularly the lesions of tuberculosistuberculosis
(TB), contagious, wasting disease caused by any of several mycobacteria. The most common form of the disease is tuberculosis of the lungs (pulmonary consumption, or phthisis), but the intestines, bones and joints, the skin, and the genitourinary, lymphatic, and
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. In botany it applies to the nodules on the roots or leaves of plants. In entomology the term is used for a compound or supplementary eye and for the nodules on the bodies of certain insects.
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tubercle

[′tü·bər·kəl]
(biology)
A small knoblike prominence.
(metallurgy)
A mound of corrosive products on the surface of a metal that is subjected to local corrosive attack.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

tubercle

1. any small rounded nodule or elevation, esp on the skin, on a bone, or on a plant
2. any small rounded pathological lesion of the tissues, esp one characteristic of tuberculosis
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
In the field, mammalogists typically use a combination of external morphological characters, such as pelage coloration and patterning, the length of the tail relative to the body, the length of the tail relative to the hind foot, the number of plantar tubercles and the number of mammae to distinguish between species (e.g., Gottschang, 1981; Hall, 1981).
Breeding tubercles: The two male paratypes have exceptionally large and numerous breeding tubercles for such a small species, another character which may distinguish B.
The WEICan data supports WhalePower Corporation's conclusion that future R&D on turbines should incorporate tubercles on the entire length of optimized blade shapes to fully measure what these new air foils can contribute to the production of energy in all wind speeds while reducing stall and noise.
More grossly visible and larger tubercles could be seen in the inbred animals than the outbred animals (52).
As the ratio a/[a.sub.0] is in terms of the ratio [omega]/p and p is given, result that must be determinate the angular speed [omega] of elliptical wheels for which on obtain the calibration imposed of the agro technical requirements for the seed potato tubercles.
The tubercles significantly altered the flipper's performance in the fluid flow.
A Cuticle with distinct areoles usually E ornamented with bristles or tubercles; male tail entire (Fig.
"And how are your Montgomery's Tubercles? They need to be in full working order come the big day, don't you know."
In the tubercles, TB bacilli may persist within macrophages, but further multiplication and spread of M.
-- Most of the species of Lyelliceras of which I am aware have four tubercles at some part of the growth stage in addition to the ventral tubercle.
And further, it came to be thought that the tubercles, the destructive consequences of the illness, might be used to frustrate it."