any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter

any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter

any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter

any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter

As obtained by Moissan in the fused condition by means of an electric furnace, although not quite free from carbon, metallic titanium is not unlike silicon, but whiter, lustrous, very hard, but brittle, of specific gravity 4.87. It burns when heated in the air, and is attacked by the common mineral acids, a light strong grey lustrous corrosion-resistant metallic element used in strong lightweight alloys (as for airplane parts); the main sources are rutile and ilmenite, A chemical element, atomic number 22; it is a strong, corrosion-resistant transition metal, used to make light alloys for aircraft etc.

Tobit, noun_ infection transmitted by inhalation or ingestion of tubercle bacilli and manifested in fever and small lesions (usually in the lungs but in various other parts of the body in acute stages), a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite, A symbol sometimes used for the chemical element terbium. Tr. is more common

A light, silvery metal extracted from bauxite, and a chemical element (symbol Al) with an atomic number of 13

A light, silvery metal extracted from bauxite, and a chemical element (symbol Al) with an atomic number of 13

A manufacturers' name for bleaching-powder, A chemical element (symbol O) with an atomic number of 8 and relative atomic mass of 15.9994, a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust

A carbon copy, uncountable The chemical element (symbol C) with an atomic number of 6, an abundant nonmetallic tetravalent element occurring in three allotropic forms_ amorphous carbon and graphite and diamond; occurs in all organic compounds