lysergic acid


ly·​ser·​gic acid lə-ˈsər-jik- How to pronounce lysergic acid (audio) (ˌ)lī- How to pronounce lysergic acid (audio)
: a crystalline acid C16H16N2O2 from ergotic alkaloids
also : lsd

Examples of lysergic acid in a Sentence

Recent Examples on the Web Chemists at Sandoz Laboratories, in Basel, Switzerland, first synthesized an experimental compound known as lysergic acid diethylamide in 1938. Margaret Talbot, The New Yorker, 22 Jan. 2024 It’s created from the lysergic acid found in ergot, which is a fungus that infects rye. Stav Dimitropoulos, SELF, 29 Apr. 2021

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'lysergic acid.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


lysergic from lys- (in hydrolysis) + erg(ot) + -ic entry 1

Note: Word introduced by the American biochemist Walter A. Jacobs (1883-1967) and chemist Lyman C. Craig (1906-74) in "The ergot alkaloids II. The degradation of ergotinine with alkali. Lysergic acid," Journal of Biological Chemistry, vol. 104, no. 3 (March 1, 1934), pp. 547-51.

First Known Use

1934, in the meaning defined above

Time Traveler
The first known use of lysergic acid was in 1934

Dictionary Entries Near lysergic acid

Cite this Entry

“Lysergic acid.” Dictionary, Merriam-Webster, Accessed 14 Jun. 2024.

Medical Definition

lysergic acid

ly·​ser·​gic acid lə-ˌsər-jik- How to pronounce lysergic acid (audio) (ˌ)lī- How to pronounce lysergic acid (audio)
: a crystalline acid C16H16N2O2 that is an ergotic alkaloid
also : lsd

More from Merriam-Webster on lysergic acid

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