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From Translingual Lactuca (genus of lettuces) +‎ -one


lactucone (uncountable)

  1. (organic chemistry) A white, crystalline, tasteless substance found in the milky sap of species of Lactuca, and constituting an essential ingredient of lactucarium.

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for lactucone in
Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.)