from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any of a class of heterocyclic compounds, formally acid anhydrides, formed by heating α-lactones
  • n. The anhydride of lactic acid.

from the GNU version of the Collaborative International Dictionary of English

  • n. A white, crystalline substance, obtained from lactic acid by distillation, and regarded as an anhydride; also, by extension, any similar substance.

from The Century Dictionary and Cyclopedia

  • n. A volatile substance, C6H8O4, one of the anhydrids of lactic acid produced by the dry distillation of that acid. See lactone.


Sorry, no etymologies found.


  • A lactone is a cyclic ester, a type of lactide, which is formed from dehydrated lactic acid.

    Not all "Lact" Words Are the Same

  • PALCA: The X-ray pictures of the particular block copolymer Bates was studying - and in case you're interested, it was a mix of poly isoprene and poly lactide and poly styrene, poly isoprene and poly ethylene oxide anyway, those X-ray pictures suggested something unusual was going on.

    Molecular Mimicry: Plastic, Steel Line Up Like Kin

  • The X-ray pictures of the particular block copolymers Bates was studying - one polymer containing isoprene and lactide; and another polymer containing styrene, isoprene and ethylene oxide - suggested something unusual was going on.

    NPR Topics: News

  • Zhou WZ, Prabha S, Sahoo SK, Labhasetwar V (2002) Rapid endo-lysosomal escape of poly (DL-lactide-co-glycolide) nanoparticles: implications for drug and gene delivery.

    PLoS ONE Alerts: New Articles


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