Tan"sy (?), n. [OE. tansaye, F. tanaise; cf. It. & Sp. tanaceto, NL. tanacetum, Pg. atanasia, athanasia, Gr. 'aqanasi`a immortality, fr. 'aqa`natos immortal; 'a priv. + qa`natos death.]

1. Bot.

Any plant of the composite genus Tanacetum. The common tansy (T. vulgare) has finely divided leaves, a strong aromatic odor, and a very bitter taste. It is used for medicinal and culinary purposes.


A dish common in the seventeenth century, made of eggs, sugar, rose water, cream, and the juice of herbs, baked with butter in a shallow dish.



Double tansy Bot., a variety of the common tansy with the leaves more dissected than usual. -- Tansy mustard Bot., a plant (Sisymbrium canescens) of the Mustard family, with tansylike leaves.


© Webster 1913.

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