different between vertex vs sirius

English

Etymology

Late Middle English, borrowed from Latin vertex (“whirl, eddy; top, crown, peak, summit”).

Pronunciation

• (Received Pronunciation) IPA^(key): /?v??.t?ks/
• (General American) IPA^(key): /?v??t?ks/
• Rhymes: -??(?)t?ks

Noun

vertex (plural vertices or vertexes)

1. The highest point, top or apex of something.

   Synonyms: acme, apex, peak, top

   1. (anatomy) The highest surface on the skull; the crown of the head.
2. (geometry) An angular point of a polygon, polyhedron or higher order polytope.
   1. The common point of the two rays that form an angle.
   2. The point at which an axis meets a curve or surface.
3. (mathematics) A point on the curve with a local minimum or maximum of curvature.
4. (graph theory) One of the elements of a graph joined or not by edges to other vertices.

   Synonym: node

   Coordinate term: plot

5. (computer graphics) A point in 3D space, usually given in terms of its Cartesian coordinates.
6. (optics) The point where the surface of a lens crosses the optical axis.
7. (particle physics) An interaction point.
8. (astrology) The point where the prime vertical meets the ecliptic in the western hemisphere of a natal chart.
9. (typography) A sharp downward point opposite a crotch, as in the letters "V" and "W" but not "Y".

   Coordinate term: apex

Derived terms

Translations

See also

• Mathworld article on vertices of polyhedra
• Mathworld article on vertices of polygons

References

• “vertex”, in Lexico, Dictionary.com; Oxford University Press, 2019–present.
• “vertex”, in Merriam–Webster Online Dictionary, (Please provide a date or year).

French

Etymology

From Latin vertex.

Pronunciation

• IPA^(key): /v??.t?ks/

Noun

vertex m (plural vertex)

1. (anatomy) vertex

Further reading

• “vertex” in Émile Littré, Dictionnaire de la langue française, 1872–1877.
• “vertex” in Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

Latin

Alternative forms

• vortex (archaic)

Etymology

From vert? (“to turn around, turn about”).

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

Pronunciation

• (Classical) IPA^(key): /?u?er.teks/, [?u??rt??ks?]
• (Ecclesiastical) IPA^(key): /?ver.teks/, [?v?rt??ks]

Noun

vertex m (genitive verticis); third declension

1. whirl, whirlpool, eddy, vortex
2. eddy of wind or flame, whirlwind, coil of flame
3. (literally, anatomy) top, crown of the head
4. (transferred sense)
   1. (poetic) head
   2. pole of the heavens (north or south)
   3. highest point, top, peak, summit (of a mountain, house, tree, etc.)

      Antonym: fundus

      1. (figuratively, poetic) highest, uttermost, greatest

Inflection

Third-declension noun.

Derived terms

Descendants

References

• vertex in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• vertex in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• vertex in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
• vertex in Gaffiot, Félix (1934) Dictionnaire illustré Latin-Français, Hachette
• Carl Meissner; Henry William Auden (1894) Latin Phrase-Book?^[1], London: Macmillan and Co.

Romanian

Etymology

From French vertex, from Latin vertex.

Noun

vertex n (uncountable)

1. vertex

Declension