Nouns denoting substances
- pure gold
- 100 per cent gold
- cardboard
- a stiff moderately thick paper
- carotene
- yellow or orange-red fat-soluble pigments in plants
- solute
- the dissolved matter in a solution; the component of a solution that changes its state
- polymer
- a naturally occurring or synthetic compound consisting of large molecules made up of a linked series of repeated simple monomers
- buffer solution
- a solution containing a buffer
- organic compound
- any compound of carbon and another element or a radical
- animal product
- a product made from animal material
- catechin
- a tannic acid that is extracted from black catechu as a white crystalline substance
- pigskin
- leather from the skin of swine
- iron ore
- an ore from which iron can be extracted
- almandine
- a purple variety of the ruby spinel
- streptodornase
- an enzyme produced by some hemolytic strains of streptococcus that dissolves fibrinous secretions from infections; used medicinally (often in combination with streptokinase)
- bone ash
- ash left when bones burn; high in calcium phosphate; used as fertilizer and in bone china
- tungstate
- a salt of tungstic acid
- Mn
- a hard brittle grey polyvalent metallic element that resembles iron but is not magnetic; used in making steel; occurs in many minerals
- rhodopsin
- a red photopigment in the retinal rods of vertebrates; dissociates into retinene by light
- case-hardened steel
- steel with a surface that is much harder than the interior metal
- silvex
- a herbicide that is effective in controlling woody plants but is toxic to animals
- heavy water
- water containing a substantial proportion of deuterium atoms, used in nuclear reactors
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