different between convex vs ovolo

English

Etymology

Borrowed from Middle French convexe, from Latin convexus (“arched”).

Pronunciation

• (Received Pronunciation) IPA^(key): /?k?nv?ks/
• (General American) IPA^(key): /?k?nv?ks/
• The noun was often stressed on the second syllable by early writers, such as Milton, and occasionally by later poets.

Adjective

convex (comparative more convex, superlative most convex)

1. curved or bowed outward like the outside of a bowl or sphere or circle
   • 1837, William Whewell, History of the Inductive Sciences

     Drops of water naturally form themselves into figures with a convex surface.

2. (mathematics, not comparable, of a set in Euclidean space) arranged such that for any two points in the set, a straight line between the two points is contained within the set.
3. (geometry, not comparable, of a polygon) having no internal angles greater than 180 degrees.
4. (functional analysis, not comparable, of a real-valued function on the reals) having an epigraph which is a convex set.

Antonyms

• concave

Derived terms

Translations

Noun

convex (plural convexes)

1. Any convex body or surface.
   • 1714, Thomas Tickell, Royal Progress

     Half heaven's convex glitters with the flame.

2. (gambling) A playing card made convex for use in cheating.

   Coordinate term: concave

3. (gambling) A small convex mirror used to cheat by observing other players' cards.

   Synonym: shiner

   • 2019, John Philip Quinn, Fools of Fortune; or, Gambling and Gamblers

     Of all the devices for defrauding at poker, the “shiner,” or “convex” […] Modern convexes are also considerably larger than those of former days.

References

• John A. Simpson and Edward S. C. Weiner, editors (1989) , “convex”, in The Oxford English Dictionary, 2nd edition, Oxford: Clarendon Press, ?ISBN

Catalan

Etymology

Borrowed from Latin convexus.

Pronunciation

• (Balearic, Valencian) IPA^(key): /kom?v?ks/
• (Central) IPA^(key): /kum?b?ks/

Adjective

convex (feminine convexa, masculine plural convexos, feminine plural convexes)

1. convex

Antonyms

• còncau

Related terms

• convexitat

Further reading

• “convex” in Diccionari de la llengua catalana, segona edició, Institut d’Estudis Catalans.

Dutch

Etymology

Borrowed from French convexe, from Latin convexus.

Pronunciation

• IPA^(key): /k?n?v?ks/
• Hyphenation: con?vex
• Rhymes: -?ks

Adjective

convex (comparative convexer, superlative meest convex or convext)

1. convex

   Synonym: bolrond

   Antonym: concaaf

Inflection

Derived terms

• biconvex
• convexiteit

Romanian

Etymology

From French convexe, from Latin convexus.

Adjective

convex m or n (feminine singular convex?, masculine plural convec?i, feminine and neuter plural convexe)

1. convex

Declension

English

Alternative forms

• ovulo

Etymology

From Italian ovolo, from Latin ?vum (“egg”). Doublet of ovule.

Noun

ovolo (plural ovolos)

1. (architecture) A classical convex moulding carved with an egg-and-dart ornament.
   • 2001, Adolfo J. Domínguez, Carmen Sánchez, Gocha R. Tsetskhladze (editor), Greek Pottery from the Iberian Peninsula: Archaic and Classical Periods, page 196,

     Decoration inside: six linked palmettes with 9 petals around a band of ovolos between incised lines, surrounded by 13 palmettes linked around a band of ovolos.

   • 2005, Robert Chitham, The Classical Orders Of Architecture, 2nd Edition, page 76,

     Each of the pairs is connected by a kind of web, and each pair stands clear of the ovolo and astragal mouldings which form a kind of extension to the column shaft and complete the essential construction of the capital. Ovolo and astragal are enriched with egg and dart and bead and reel respectively, the setting out related to a fluting pattern of twenty-four flutes to the column shaft circumference, as shown on the plan.

   • 2008, Roy Underhill, Eleanor Underhill, The Woodwright?s Guide: Working Wood With Wedge and Edge, page 112,

     Using a template or a good eye to guide the paring chisel, slice off the corners of the tenon ovolos at 45 degrees.

Synonyms

• echinus
• quarter-round

See also

• astragal
• egg and dart

Further reading

• ovolo on Wikipedia.Wikipedia

Italian

Alternative forms

• ovulo

Etymology

Diminutive of ovo, uovo (“egg”).

Pronunciation

• IPA^(key): /??.vo.lo/
• Hyphenation: ò?vo?lo

Noun

ovolo m (plural ovoli)

1. (mycology) Caesar's mushroom (Amanita caesarea)

   Synonyms: cocco, ovolo buono

2. (botany) A rounded lump or protuberance at the base of a plant.
3. (architecture) ovolo
4. (rare) An object shaped like a small egg.

Derived terms

• ovolaccio
• ovolo bianco
• ovolo malefico

References

• ovolo in Treccani.it – Vocabolario Treccani on line, Istituto dell'Enciclopedia Italiana