| ALEXANDRITE | • alexandrite n. (Mineralogy) A form of chrysoberyl that displays a colour change dependent upon the light source, along… • ALEXANDRITE n. a gem variety of chrysoberyl which appears green in daylight and red in artificial light. |
| BLEACHERITE | • bleacherite n. (Sports, informal) One who sits in the bleachers. • BLEACHERITE n. one who sits in the bleachers, uncovered seats. |
| BREUNNERITE | • BREUNNERITE n. an iron-containing type of magnesite used in the manufacture of refractory bricks. |
| CASSITERITE | • cassiterite n. (Mineralogy) A generally black mineral, composed of tin oxide, SnO2, which is an important ore of tin. • CASSITERITE n. native tin dioxide, the major ore of tin, aka tinstone. |
| CERARGYRITE | • cerargyrite n. (Mineralogy) A mineral form of silver chloride, AgCl, that is a rare ore of silver; horn silver. • CERARGYRITE n. a mineral consisting of silver chloride in crystalline form, aka horn silver. |
| HYPONITRITE | • hyponitrite n. (Inorganic chemistry) The oxyanion of nitrogen NO- derived from hyponitrous acid; any salt containing… • HYPONITRITE n. a salt or ester of hyponitrous acid. |
| LABRADORITE | • labradorite n. (Mineralogy) A plagioclase feldspar mineral, calcium sodium aluminum silicate, often very coarsely crystalline… • LABRADORITE n. a triclinic silicate of the plagioclase feldspar series which may show a bluish or multicoloured iridescence. |
| MADREPORITE | • madreporite n. (Zoology) A calcareous opening in the body of echinoderms which connects the water vascular system to the environment. • madreporite n. (Archaic, paleontology) A fossil stony coral, or a deposit composed of the same. • MADREPORITE n. in echinoderms, a perforated plate serving as opening to the stone canal. |
| MELANTERITE | • melanterite n. (Mineralogy) a widespread green, mostly fibrous mineral composed of hydrated ferrous sulphate. • MELANTERITE n. native copperas. |
| OCTAHEDRITE | • octahedrite n. (Mineralogy) The mineral anatase. • OCTAHEDRITE n. a variety of anatase, crystallising in square bipyramids. |
| PERISTERITE | • peristerite n. (Mineralogy) A variety of albite, whitish and slightly iridescent. • PERISTERITE n. an albite feldspar with a pigeon-like play of colour. |
| PHOSPHORITE | • phosphorite n. (Mineralogy) a sedimentary rock rich in phosphate minerals such as apatite. • PHOSPHORITE n. fibrous apatite. |
| PYRARGYRITE | • pyrargyrite n. (Mineralogy) A sulfosalt mineral used as a silver ore; it is dark red or black in color with a metallic… • PYRARGYRITE n. a deep-red to black silver ore. |
| UNFAVOURITE | • unfavourite v. Alternative form of unfavorite. • UNFAVOURITE adj. not favourite or favoured. |