You know what it looks like… but what is it called?
TAKE THE QUIZ“9”
The following 3 entries include the term 9.
delta-9-tetrahydrocannabinol
noundelta-9-THC
nounnonoxynol-9
noun: a spermicide used in contraceptive products that consists of a mixture of compounds having the general formula C15H23(OCH2CH2)nOH with an average of nine ethylene oxide groups per molecule
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Merriam-Webster unabridged