from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A cylindrical surface or solid, all of whose sections perpendicular to the elements are elliptical.
- adj. Resembling a cylinder.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A cylinder with elliptical cross-section.
- n. A certain three-dimensional surface described by a moving straight line, used to illustrate the motions of a rigid body and the forces that act upon it.
from the GNU version of the Collaborative International Dictionary of English
- n. A solid body resembling a right cylinder, but having the bases or ends elliptical.
- n. A certain surface of the third degree, described by a moving straight line; -- used to illustrate the motions of a rigid body and also the forces acting on the body.
from The Century Dictionary and Cyclopedia
- n. A solid body bounded by a cylindrical surface cut orthogonally by elliptical bases.
- n. A conoidal cubic surface whose equation is z(x + y)—2 axy = 0.
- Having the form of a cylinder with equal and parallel elliptical bases.
- n. In anthropology, a cranium the norma vertical is of which is elongated, flattened at the forehead and occiput, and rounded at the sides.
- n. In pathology, a body resembling a tube-cast, consisting usually only of mucus.
It appeared to be of fixed shape, a cylindroid almost ten kilometers in length and two in diameter, majestically rotating on its long axis, mother-of-pearl iridescent.
In a hold, among cases of supplies for the research team on Gwinsai, he was surprised to recognize a lean cylindroid, one hundred twenty centimeters long.
Under-gravitationally speaking, above-the ship's skin, there was a five-meter space running almost the whole length of the cylindroid.
She was a big cylindroid, two hundred and forty meters long from the blunt nose to the gravitic focusing cones at the stern, forty meters in diameter.
A smaller calculus, which has been called coralline, is also cylindroid, with a number of brown, rough, crystalline oxalate of lime branches and whitish depressions of carbonate.
The larger calculi, sometimes weighing 12 to 24 ounces, are molded in the pelvis of the kidney into a cylindroid mass, with irregular rounded swellings at intervals.
In mathematical modeling and experiments testing the efficacy of several conditions: drug or dye with no particles; particles coated with fluorescein dye, positive or negative charge; and particles coated with anti-cancer drug doxorubicin, positive or negative charge, the UMass Amherst researchers show that gold nanoparticles move and localize differently in the 3-D cylindroid tumor tissue, depending on whether the nanoparticles are positively or negatively charged.
But by experimenting with different payloads carried on the gold nanoparticles in the new tumor cylindroid device,