paraboloid
noun
a surface that can be put into a position such that its sections parallel to at least one coordinate plane are parabolas.
paraboloidal
-
a word derived from
paraboloid.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Its upper surface is paraboloidal in shape, as a spherical surface will not unite in a sharp focus the rays coming from a distant object.
From The New Heavens by George Ellery Hale
The central rays of light are blocked out by means of an opaque stop while the peripheral rays are reflected from the paraboloidal sides of the condenser and refracted by the object viewed.
From The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged. by J. W. H. (John William Henry) Eyre
Similiar paraboloidal forms had, nevertheless, occasionally been seen to make an integral part of earlier coronas; and it remains extremely doubtful whether Schaeberle's "eclipse-comet" was justly entitled to the character claimed for it.
From A Popular History of Astronomy During the Nineteenth Century Fourth Edition by Agnes M. (Agnes Mary) Clerke
In Thomson's improved form this is accomplished in a novel manner by making the pole of the magnet paraboloidal in form, and making an opening in the movable armature to encircle said pole.
From Scientific American Supplement, No. 388, June 9, 1883 by Various
These reflectors were formed of facets of mirror-glass placed in hollow paraboloidal moulds of plaster.
From The Sea: Its Stirring Story of Adventure, Peril, & Heroism. Volume 2 by Frederick Whymper
