The Collaborative International Dictionary
Hesperidin \Hes*per"i*din\, n. [See Hesperidium.] (Chem.) A glucoside found in ripe and unripe fruit (as the orange), and extracted as a white crystalline substance.
Wiktionary
n. A citrus flavonoid compound, reported as the predominant flavonoid in lemons and oranges. Chemically, it is hesperetin-7-rutinoside, namely (S)-7-[[6-0-(6-deoxy-alpha-L-mannopyranosyl)-beta-D-glucopyranosyl] oxy]-2,3-dihydro-5-hydroxy-2-(3-hydroxy-4-methoxyphenyl)-4H-1-benzopyran-4-one.
Wikipedia
Hesperidin is a flavanone glycoside found in citrus fruits. Its aglycone form is called hesperetin. Its name is derived from the word " hesperidium", for fruit produced by citrus trees.
Hesperidin was first isolated in 1828 by French chemist Lebreton from the white inner layer of citrus peels (mesocarp, albedo).
Hesperidin is believed to play a role in plant defense.
Usage examples of "hesperidin".
The peel furnishes hesperidin, a volatile oil, gallic acid, and a bitter principle.