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Webster 1913 Edition
Mesembryanthemum
‖
Me-semˊbry-an′the-mum
,Noun.
[NL., fr. Gr.
μεσημβρία
midday + ἄνθοσ
flower.] (Bot.)
A genus of herbaceous or suffruticose plants, chiefly natives of South Africa. The leaves are opposite, thick, and fleshy. The flowers usually open about midday, whence the name.