dexamethasone

[dek-suh-meth-uh-sohn, -zohn]
noun Pharmacology.
a crystalline, water-soluble steroid, C 22 H 29 FO 5 , used in the treatment of certain allergic or inflammatory conditions, as rheumatoid arthritis, bronchial asthma, or dermatosis.

Origin:
1955–60; perhaps Dexa(myl) + meth(yl) + -a- (of unclear orig.) (corti)sone

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dexamethasone dex·a·meth·a·sone (děk'sə-měth'ə-sōn', -zōn')
n.
A synthetic glucocorticoid used primarily in the treatment of inflammatory disorders.

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Corticosteroids, such as prednisone or dexamethasone, may also be used.
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