Biuret
a white crystalline substance, C 2 H 5 O 2 N 3 ⋅H 2 O, soluble in water and alcohol, used for the identification of urea, from which it is formed on heating.
Historical Examples
The Chemistry of Plant Life Roscoe Wilfred Thatcher
The Nature of Animal Light E. Newton Harvey
On Digestive Proteolysis R. H. Chittenden
Animal Proteins Hugh Garner Bennett
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- Bivalent
Chemistry. having a valence of two. having two valences, as aluminum with valences of two and three. Genetics. pertaining to associations of two homologous chromosomes. Genetics. a pair of bivalent chromosomes, especially when pairing during meiosis. Historical Examples Chambers’s Twentieth Century Dictionary (part 2 of 4: E-M) Various The Organism as a Whole Jacques Loeb […]
- Bivalence
Chemistry. having a valence of two. having two valences, as aluminum with valences of two and three. Genetics. pertaining to associations of two homologous chromosomes. Genetics. a pair of bivalent chromosomes, especially when pairing during meiosis. noun (logic, philosophy) the semantic principle that there are exactly two truth values, so that every meaningful statement is […]
- Bivalency
Chemistry. having a valence of two. having two valences, as aluminum with valences of two and three. Genetics. pertaining to associations of two homologous chromosomes. Genetics. a pair of bivalent chromosomes, especially when pairing during meiosis. adjective (chem) another word for divalent (of homologous chromosomes) associated together in pairs noun a structure formed during meiosis […]
- Bivalent-chromosome
bivalent chromosome
- Bivalve
Also called lamellibranch. Zoology. any mollusk, as the oyster, clam, scallop, or mussel, of the class Bivalvia, having two shells hinged together, a soft body, and lamellate gills. Botany. having two valves, as a seedcase. Zoology. having two shells, usually united by a hinge. having two similar parts hinged together. Historical Examples Encyclopaedia Britannica, 11th […]