Esculin
/ˈɛs.kjʊ.lɪn/noun
A fluorescent coumarin glycoside found chiefly in the bark and leaves of horse chestnut trees.
Did you know?Esculin fluoresces blue under ultraviolet light, a property used in laboratories and historically associated with the strange, almost magical behavior of plant extracts.
Etymological Timeline
Classical Latin
Latin
aesculus
“A type of oak or other large forest tree; the name later became associated with horse chestnuts.”
16th Century
Latin
Aesculus
“Botanical genus name adopted for the horse-chestnut group, based on the classical tree name.”
19th Century
German
Esculin
“Chemical name formed from Aesculus with the suffix -in, used for a substance obtained from horse chestnut.”
19th Century
English
esculin
“A plant-derived crystalline glycoside, especially from horse chestnut bark.”
Modern English
English
esculin
“A fluorescent coumarin glycoside used in biochemical, pharmaceutical, and laboratory contexts.”