noun Biochemistry.
a crystallizable, bioflavinoid glycoside, C 28 H 34 O 15 , occurring in most citrus fruits, especially in the spongy envelope of oranges and lemons.

1830–40; < Neo-Latin; see Hesperides, -in2

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World English Dictionary
hesperidin (hɛˈspɛrɪdɪn)
a glycoside extracted from orange peel or other citrus fruits and used to treat capillary fragility
[C19: from New Latin hesperidium + -in]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
Hesperidin is the predominant flavonoid in lemons and sweet oranges.
Hesperidin was the only flavonoid detected in mandarin.
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