calcium

== English == === Etymology === Coined by British chemist Humphry Davy in 1808, from Latin calx (“lime, limestone”) because it occurs in limestone. By surface analysis, calc- +‎ -ium. === Pronunciation === (US, UK) IPA(key): /ˈkælsi.əm/ (South Asia) IPA(key): /ˈkalʃɪəm/ (Philippines) IPA(key): /ˈkæl.ʃum/ === Noun === calcium (countable and uncountable, plural calciums) The chemical element (symbol Ca) with atomic number 20: a soft, silvery-white alkaline earth metal which occurs naturally as carbonate in limestone and as silicate in many rocks. Alternative form: Ca (symbol) (countable) An atom of this element. ==== Derived terms ==== ==== Related terms ==== ==== Translations ==== === See also === chalk lime limestone === References === Calcium on the British Royal Society of Chemistry's online periodic table === Further reading === Calcium in the Encyclopædia Britannica (11th edition, 1911) == Danish == === Alternative forms === kalcium === Etymology === From Latin calx +‎ -ium. === Noun === calcium n (singular definite calciummet, not used in plural form) calcium Coordinate term: kalk ==== Declension ==== === References === “calcium” in Den Danske Ordbog == Dutch == === Etymology === Ultimately from English calcium. Coined by Humphry Davy. === Pronunciation === IPA(key): /ˈkɑl.siˌʏm/ Hyphenation: cal‧ci‧um === Noun === calcium n (uncountable, no diminutive) calcium [from early 19th c.] ==== Derived terms ==== calciumoxide calciumzout ==== Related terms ==== kalk == French == === Pronunciation === IPA(key): /kal.sjɔm/ === Noun === calcium m (uncountable) calcium ==== Related terms ==== calcaire calcifier calcique ==== Descendants ==== Lingala: kalisu === Further reading === “calcium”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012 == Interlingua == === Noun === calcium (uncountable) calcium == Latin == === Pronunciation === (Classical Latin) IPA(key): [ˈkaɫ.ki.ũː] (modern Italianate Ecclesiastical) IPA(key): [ˈkal̠ʲ.t͡ʃi.um] === Etymology 1 === Form of calx. ==== Noun ==== calcium genitive plural of calx === Etymology 2 === Derived from calx, calcis (“chalk”) +‎ -ium (chemical element suffix). ==== Noun ==== calcium n (genitive calciī); second declension (New Latin) calcium ===== Declension ===== Second-declension noun (neuter), singular only. ===== Descendants ===== → Catalan: calci → French: calcium → Galician: calcio → Italian: calcio → Portuguese: cálcio → Romanian: calciu → Sicilian: cauci, cauciu → Spanish: calcio