HESPERIDIN
Etymology
Noun
hesperidin (countable and uncountable, plural hesperidins)
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.
Source: Wiktionary
Hes*per"i*din, n. Etym: [See Hesperidium.] (Chem.)
Definition: A glucoside found in ripe and unripe fruit (as the orange), and
extracted as a white crystalline substance.
Source: Webster’s Unabridged Dictionary 1913 Edition