Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A drug, C23H14Na2O11, that inhibits the release of histamine from mast cells and is usually administered by inhalation in the form of its sodium salt to prevent asthmatic attacks.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun pharmacology A chemical substance, acting as a mast cell stabilizer.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Alteration of chromonyl, one of its constituents (chrom(o)– + –on(e) + –yl).]

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