valeriana

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valeriana f sing

  1. (botanica) (farmacologia) pianta delle valerianacee (Valeriana officinalis), comune nei luoghi umidi dell’Eurasia, che consiste in un’erba alta fino ad un metro e mezzo con breve rizoma, foglie opposte a punta, fiori bianchi o rosei in pannocchie di cime, e frutto ad achenio di superficie piumosa. Dal rizoma e dalla radice secca della pianta si ottiene, per distillazione con vapore d’acqua, un olio essenziale molto usato come blando sedativo
va | le | rià | na

IPA: /valeˈrjana/

dal latino medievale valeriana

(botanica)