quassia (kwah´she-a)

Bitterwood, the heartwood of Picrasma excelsa (Picraena excelsa), known as Jamaica q., or of Quassia amara (family Simarubaceae), known as Surinam q.; a bitter tonic; the infusion has been administered by enema in the treatment of threadworms. [Quassi, a resident of Surinam who used it as a tonic]


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