fenethylline

American

[fen-uh-thuh-lahyn, -leen] / ˈfɛn ə θəˌlaɪn, -ˌlin /

noun

a highly addictive synthetic amphetamine, C 18 H 23 N 5 O 2 , having a double bond with theophylline and formerly used in Europe to treat ADHD and some other conditions: now a controlled substance in most countries.

First recorded in 1960–65

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The dual nature of fenethylline means there is debate about how it works.

From Economist • Aug. 17, 2017

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023