Noun
steviol (usually uncountable, plural steviols)
(organic chemistry) A diterpene derived from stevia.
The stevia plant contains a compound known as steviol which, when extracted, has 300 times the sweetness of sugar while having minimal impact on blood sugar. Source: Internet
Extraction Rebaudioside A has the least bitterness of all the steviol glycosides in the Stevia rebaudiana plant. Source: Internet
Then stevioside is broken down into glucose and steviol. Source: Internet