Colcothar
[kol-kuh-ther] /ˈkɒl kə θər/
noun, Chemistry.
1.
the brownish-red oxide of iron produced by heating ferrous sulfate: used chiefly as a pigment in paints and theatrical rouge, and as a polishing agent.
/ˈkɒlkəˌθɑː/
noun
1.
a finely powdered form of ferric oxide produced by heating ferric sulphate and used as a pigment and as jewellers’ rouge Also called crocus
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[kohld] /koʊld/ adjective, colder, coldest. 1. having a relatively low temperature; having little or no warmth: cold water; a cold day. 2. feeling an uncomfortable lack of warmth; chilled: The skaters were cold. 3. having a temperature lower than the normal temperature of the human body: cold hands. 4. lacking in passion, emotion, enthusiasm, ardor, […]
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- Cold agglutinin
cold agglutinin n. An agglutinin associated with cold agglutination.
- Cold-blooded
[kohld-bluhd-id] /ˈkoʊldˈblʌd ɪd/ adjective 1. designating or pertaining to animals, as fishes and reptiles, whose blood temperature ranges from the freezing point upward, in accordance with the temperature of the surrounding medium; poikilothermic. 2. without emotion or feeling; dispassionate; cruel: a cold-blooded murder. 3. sensitive to cold. adjective 1. having or showing a lack of […]
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Animals, such as reptiles, fishes, and amphibians, that cannot control their body temperature and therefore become sluggish in cold weather. (Compare warm-blooded animals.) Note: Cold-blooded animals are often seen sunning themselves to warm up.