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Webster 1913 Edition

Ageratum

‖

A-ger′a-tum

(ȧ-jĕr′ȧ-tŭm or ăjˊẽr-ā′tŭm)

,

p

rop.

Noun.

[NL., fr. Gr.

ἀγήρατον

a sort of plant;

ἀ

priv. +

γήρασ

old age.]

(Bot.)

A genus of plants, one species of which (

Ageratum Mexicanum

) has lavender-blue flowers in dense clusters.