1. calcium oxide

noun. A white crystalline oxide used in the production of calcium hydroxide.
Synonyms
calcium unslaked lime calx atomic number 20 quicklime calcined lime Ca oxide fluxing lime lime burnt lime
Antonyms
uncover

2. calcium-cyanamide

noun. A compound used as a fertilizer and as a source of nitrogen compounds.
Synonyms
chemical compound cyanamide compound
Antonyms
smooth rough simple decrease

3. calcium-channel blocker

noun. Any of a class of drugs that block the flow of the electrolyte calcium (either in nerve cell conduction or smooth muscle contraction of the heart); has been used in the treatment of angina or arrhythmia or hypertension or migraine.
Synonyms
diltiazem Cardizem medication verapamil Isoptin Calan medicine medicinal drug nifedipine Procardia calcium blocker medicament
Antonyms
over-the-counter drug prescription medicine prescription drug over-the-counter medicine

4. calcium

noun. (ˈkælsiːəm) A white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals.
Synonyms
calcium oxide fluor Ca calx metal fluorspar limestone calcium ion fluxing lime fluorite burnt lime factor IV gypsum quicklime calcined lime unslaked lime atomic number 20 metallic element lime
Antonyms
nonmetallic uncover

5. oxide

noun. (ˈɑːkˌsaɪd) Any compound of oxygen with another element or a radical.
Synonyms
minium silicon dioxide calcium oxide zirconia titanic oxide compound sulfur oxide philosophers' wool philosopher's wool dioxide titanium dioxide calx peroxide fluxing lime burnt lime zirconium dioxide titanium oxide quicklime tetroxide pentoxide calcined lime nitrogen oxide titania red lead sulphur oxide ferric oxide superoxide chemical compound unslaked lime monoxide silicon oxide copper oxide zirconium oxide silica flowers of zinc trioxide zinc oxide lime
Antonyms
smooth rough simple decrease disintegrate
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