Lexic.us

Definition of Allotropy

1. Noun. The phenomenon of an element existing in two or more physical forms.

Definition of Allotropy

1. Noun. (chemistry) A property, exhibited by some elements of existing in multiple forms with different atomic structures. ¹

¹ Source: wiktionary.com

Definition of Allotropy

1. [n -PIES]

Medical Definition of Allotropy

1. The property of existing in two or more conditions which are distinct in their physical or chemical relations. Thus, carbon occurs crystallized in octahedrons and other related forms, in a state of extreme hardness, in the diamond; it occurs in hexagonal forms, and of little hardness, in black lead; and again occurs in a third form, with entire softness, in lampblack and charcoal. In some cases, one of these is peculiarly an active state, and the other a passive one. Thus, ozone is an active state of oxygen, and is distinct from ordinary oxygen, which is the element in its passive state. Origin: Gr. Other + direction, way, to turn: cf. F. Allotropie. Source: Websters Dictionary (01 Mar 1998)

Lexicographical Neighbors of Allotropy

Literary usage of Allotropy

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Metallography of Iron and Steel by Albert Sauveur (1912)
"This falling out of solution really implies a spontaneous change of crystalline form and is therefore an evidence of polymorphism, hence of allotropy, ..."

2. Elements of Chemistry: Theoretical and Practical by William Allen Miller (1877)
"(87) allotropy.—Independently of dimorphism, the particles of many solids are capable of other modes of arrangement, which, without altering the chemical ..."

3. The Elements of Thermal Chemistry by Matthew Moncrieff Pattison Muir (1885)
"SECTION I. allotropy and Isomerism.. IF chemical composition is one of the variables on which the state of a specified material system depends, ..."

4. Principles of Chemistry, Founded on Modern Theories by Alfred Naquet, Thomas Stevenson, William Cortis (1868)
"Phosphorus can therefore exist in two different states, but it is always phosphorus. This is a phenomenon of allotropy. Let UB now compare the formiate of ..."

5. Laboratory Methods of Inorganic Chemistry by Heinrich Biltz, Wilhelm Biltz (1909)
"allotropy.i Many solid substances appear, under different conditions, ... In addition to this sort of allotropy, which, because the two forms can change ..."

6. A College Text-book of Chemistry by Ira Remsen (1901)
"allotropy.—The occurrence of an element in two or more different modifications is called allotropy. Thus, ozone is called an allotropic form of oxygen. ..."

7. Transactions of the American Institute of Mining, Metallurgical and (1914)
"THEORIES OF THE allotropy OF IRON. Several explanations have been offered for the existence and nature of the transformations in iron, and the discussion of ..."

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