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Từ điển Oxford Advanced Learner 8th
allotropy
al·lot·ropy 7 BrE [əˈlɒtrəpi] NAmE [əˈlɑːtrəpi] noun uncountable (chemistry)
the existence of two or more ↑allotropes of a chemical element
Word Origin:
[allotropy] mid 19th cent.: from Greek allotropos ‘of another form’, from allo- ‘other’ + tropos ‘manner’ (from trepein ‘to turn’).
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