Definition of "allotropism" []

• The ability (of an element) to exist in more than one physical form without change of state. (noun)

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• "It is easy to call these changes by the name allotropism, but not the less do they confound our hasty generalizations."
• "So, too, some of the alterations met with appear susceptible of no other explanations than that they are reversions to some pre-existing form, or, at any rate, that they are manifestations of a phase of the plant affected different from that which is habitual, and due, as it were, to a sort of allotropism."
• "Other arguments are drawn from chemistry, especially from the facts of isomerism, polymerism, and allotropism."