Nouns denoting substances
- sugar
- an essential structural component of living cells and source of energy for animals; includes simple sugars with small molecules as well as macromolecular substances; are classified according to the number of monosaccharide groups they contain
- cyanine dye
- any of a class of dyes containing a -CH= group linking two heterocyclic rings containing nitrogen; used as sensitizers in photography
- cysteine
- an amino acid containing sulfur that is found in most proteins; oxidizes on exposure to air to form cystine
- spinel ruby
- a spinel used as a gemstone (usually dark red)
- mucopolysaccharide
- complex polysaccharides containing an amino group; occur chiefly as components of connective tissue
- hornstone
- a fine-grained metamorphic rock formed by the action of heat on clay rocks
- water-colour
- water-soluble pigment
- mucoid
- any of several glycoproteins similar to mucin
- inhibitor
- a substance that retards or stops an activity
- diatomaceous earth
- a light soil consisting of siliceous diatom remains and often used as a filtering material
- fetoprotein
- any of several antigens that occur naturally in the fetus and sometimes in adults with cancer
- sepia
- rich brown pigment prepared from the ink of cuttlefishes
- carotene
- yellow or orange-red fat-soluble pigments in plants
- night soil
- human excreta used as fertilizer
- Es
- a radioactive transuranic element produced by bombarding plutonium with neutrons
- mono-iodotyrosine
- tyrosine with one iodine atom added
- formic acid
- a colorless pungent fuming vesicatory liquid acid HCOOH found naturally in ants and many plants or made catalytically from carbon monoxide and steam; used in finishing textiles and paper and in the manufacture of insecticides and fumigants
- asbestos
- a fibrous amphibole; used for making fireproof articles; inhaling fibers can cause asbestosis or lung cancer
- nerve gas
- a toxic gas that is inhaled or absorbed through the skin and has harmful effects on the nervous and respiratory system
- thiazine
- a compound made up of a ring of four carbon atoms and one sulfur atom and one nitrogen atom
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