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hesitant
hesitate
hesitation
Hesperian
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hesperidin
hesperidium
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Hess’s law
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Hess’s law

Hess's law [ héssiz law ]


noun 
Definition:
 
law involving chemical energy: a law in chemistry stating that the heat absorbed or released during a reaction is the same whether the reaction occurs in one or several steps

[After Germain Henri Hess (1802-1850), Swiss-born Russian chemist]
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