Paraboloid

Definition: Paraboloid

Paraboloid

Noun

1. A surface having parabolic sections parallel to a single coordinate axis and elliptic sections perpendicular to that axis.

Specialty Definitions: Paraboloid

Domain	Definitions
Aerospace	A surface of revolution generated by revolving a section of a parabola about its major axis. (references)
Source: compiled by the editor from various references; see credits.

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Specialty Definition: Paraboloid

(From Wikipedia, the free Encyclopedia)

In mathematics, a paraboloid is a quadric, a type of surface in three dimensions, described by the equation:

(elliptic paraboloid),

(hyperbolic paraboloid).

With a=b an elliptic paraboloid is a paraboloid of revolution: a surface obtained by revolving a parabola around its axis. It the shape used by the parabolic reflectors used in mirrors, antenna dishes, and the like.

A point light source at the focal point produces a parallel light beam. This also works the other way around: a parallel beam of light incident on the paraboloid is concentrated at the focal point. This applies also for other waves, hence parabolic antennas.

Source: adapted by the editor from Wikipedia, the free encyclopedia under a copyleft GNU Free Documentation License (GFDL) from the article "Paraboloid."

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Synonyms within Context: Paraboloid

Context	Synonyms within Context (source: adapted from Roget's Thesaurus).
Curvature	Adjective: curved; Verb: curviform, curvilineal, curvilinear; devex, devious; recurved, recurvous; crump; bowed; Verb: vaulted, hooked; falciform, falcated; semicircular, crescentic; sinusoid, parabolic, paraboloid; luniform, lunular; semilunar, conchoidal; helical, double helical, spiral; kinky; cordiform, cordated; cardioid; heart shaped, bell shaped, boat shaped, crescent shaped, lens shaped, moon shaped, oar shaped, shield shaped, sickle shaped, tongue shaped, pear shaped, fig shaped; kidney-shaped, reniform; lentiform, lenticular; bow-legged; (distorted); oblique; circular.
Source: adapted from Roget's Thesaurus.

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Crosswords: Paraboloid

English words defined with "paraboloid": Parabolic conoid, paraboloid reflector, paraboloidal. (references)

Specialty definitions using "paraboloid": antenna with cylindrical parabolic reflector, antenna with paraboloidal reflector ♦ Central Receiver System, Compound Paraboloid Collector ♦ parabolic aerial, parabolic antenna, paraboloidal reflector, Point-focusing Concentrator. (references)

Non-English Usage: "Paraboloid" is also a word in the following languages with English translations in parentheses.

Romanian (paraboloid), Serbo-Croatian (paraboloid), Swedish (paraboloid).

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Commercial Usage: Paraboloid

Domain	Title
Books	Hyperbolic Paraboloid Shells State of the Art (reference) (more book examples)
Source: compiled by the editor from various references; see credits.

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Usage Frequency: Paraboloid

"Paraboloid" is generally used as a noun (singular) -- approximately 83.33% of the time. "Paraboloid" is used about 6 times out of a sample of 100 million words spoken or written in English. Its rank is based on over 700,000 words used in the English language. Some parts-of-speech are not covered due to the samples used by the British National Corpus. (note: percents less than one-hundredth of one percent have been omitted)

Parts of Speech	Percent	Usage per 100 Million Words	Rank in English
Noun (singular)	83.33%	5	157,705
Adjective (general or positive)	16.67%	1	339,140
Total	100.00%	6	N/A

Source: compiled by the editor from several corpora; see credits.

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Expression: Paraboloid

Expression using "paraboloid": paraboloid reflector. Additional references.
Source: compiled by the editor from various references; see credits.

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Frequency of Internet Keywords: Paraboloid

The following statistics estimate the number of searches per day across the major English-language search engines as identified by various trade publications. Hyperlinks lead to commercial use of the expression at Amazon.com.

Expression	Frequency per Day
hyperbolic paraboloid	8
paraboloid	5
building hyperbolic paraboloid	2
Source: compiled by the editor from various references; see credits.

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Modern Translations: Paraboloid

Language		Translations for "paraboloid"; alternative meanings/domain in parentheses.
Arabic		‏الجسم المكافئ الدورلني. (various references)

Bulgarian		параболоид. (various references)

Chinese		抛物面 (Parabolic, Parabolical). (various references)

Danish		paraboloide (paraboloidal solar concentrator). (various references)

Dutch		paraboloide (paraboloidal solar concentrator). (various references)

Finnish		paraboloidiheijastin (dish, parabolic reflector, paraboloid reflector, paraboloidal reflector). (various references)

French		paraboloide (paraboloidal solar concentrator), paraboloïde. (various references)

German		Paraboloid (paraboloidal solar concentrator). (various references)

Greek		παραβολικός ανακλαστήρας (dish, parabolic reflector, paraboloid reflector, paraboloidal reflector). (various references)

Hungarian		parabolatest. (various references)

Italian		paraboloide (paraboloidal deflector, paraboloidal solar concentrator). (various references)

Korean		포물면. (various references)

Pig Latin		araboloidpay.(various references)

Portuguese		relativo a parábola (parabolical). (various references)

Romanian		paraboloid. (various references)

Russian		параболоид. (various references)

Serbo-Croatian		paraboloid. (various references)

Spanish		reflector parabólico (dish, parabolic concentrator, parabolic mirror, parabolic reflector, paraboloid reflector, paraboloidal reflector). (various references)

Swedish		paraboloid. (various references)

Turkish		paraboloit. (various references)
Source: compiled by the editor from various translation references.

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Derivations: Paraboloid

Derivations
	Words beginning with "paraboloid": paraboloidal, paraboloids. (additional references)
Source: compiled by the editor, based on several corpora (additional references).

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Anagrams: Paraboloid

Scrabble® Enable2K-Verified Anagrams
	Words within the letters "a-a-b-d-i-l-o-o-p-r"
	-2 letters: lapboard.
	-3 letters: bipolar, diabolo, dipolar, labroid, parboil, parodoi.
	-4 letters: aboard, aboral, abroad, alodia, apodal, bailor, bridal, diobol, oorali, radial, ribald, robalo.
	-5 letters: aboil, adobo, aroid, bipod, blood, bloop, board, bolar, boral, braid, brail, broad, broil, brood, dobla, dobra, dobro, dolor, drail, drool, droop, laari, labia, labor, labra, laird, liard, libra, lidar, lobar, oboli, orlop, padri, pardi, parol, pibal, pilar, plaid, podia, polar, polio, poori, rabid, radio, rapid.
	Words containing the letters "a-a-b-d-i-l-o-o-p-r"
	+1 letter: paraboloids.
	+2 letters: paraboloidal.
Source: compiled by the editor from various references; see credits. SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro.