different between geocentric vs concave

English

Alternative forms

• geocentrick (obsolete)
• geocentrical

Etymology

From geo- +? -centric.

Pronunciation

• (UK) IPA^(key): /?d?i????s?nt??k/
• (US) IPA^(key): /?d?io??s?nt??k/
• Rhymes: -?nt??k

Adjective

geocentric (not comparable)

1. Having the Earth at the center.
   • 1685, J. Flamsteed in Philosophical Transactions XV, p. 1217:

     To make the Catalogue of Eclipses, as also the Table of the Parallaxes of [Jupiter], it was necessary first to make a Table of [Jupiter]' Heliocentrick places, to which the Parallaxes being applied, give the Geocentrick.

Usage notes

• Often used in the sense of geocentrism, an obsolete cosmology which placed the Earth at the center of the universe.

Antonyms

• heliocentric

Translations

Further reading

• Geocentric model on Wikipedia.Wikipedia

Anagrams

• egocentric

Romanian

Etymology

From French géocentrique

Adjective

geocentric m or n (feminine singular geocentric?, masculine plural geocentrici, feminine and neuter plural geocentrice)

1. geocentric

Declension

English

Etymology

From Middle English concave, from Old French concave, from Latin concavus.

Pronunciation

• IPA^(key): /?k??ke?v/

Adjective

concave (comparative more concave, superlative most concave)

1. curved like the inner surface of a sphere or bowl
2. (geometry, not comparable, of a polygon) not convex; having at least one internal angle greater than 180 degrees.
3. (functional analysis, not comparable, of a real-valued function on the reals) satisfying the property that all segments connecting two points on the function's graph lie below the function.
4. hollow; empty

Antonyms

• convex

Derived terms

• concavely
• concaveness
• concavity

Translations

Noun

concave (plural concaves)

1. A concave surface or curve.
2. The vault of the sky.
3. One of the celestial spheres of the Ptolemaic or geocentric model of the world.

   Aristotle makes [Fire] to move to the concave of the Moon. - Thomas Salusbury (1661).

4. (manufacturing) An element of a curved grid used to separate desirable material from tailings or chaff in mining and harvesting.
5. (surfing) An indentation running along the base of a surfboard, intended to increase lift.
6. (skateboarding) An indented area on the top of a skateboard, providing a position for foot placement and increasing board strength.
7. (gambling) A playing card made concave for use in cheating.

   Coordinate term: convex

Translations

Verb

concave (third-person singular simple present concaves, present participle concaving, simple past and past participle concaved)

1. To render concave, or increase the degree of concavity.

Derived terms

• concaver

Translations

French

Etymology

From Old French concave, borrowed from Latin concavus.

Adjective

concave (plural concaves)

1. concave

Descendants

• ? Turkish: konkav

Further reading

• “concave” in Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

Italian

Adjective

concave

1. feminine plural of concavo

Latin

Adjective

concave

1. vocative masculine singular of concavus