Definition of mesembryanthemum
: any of a genus (Mesembryanthemum) of chiefly southern African fleshy-leaved herbs or subshrubs of the carpetweed family
Origin and Etymology of mesembryanthemum
New Latin, irregular from Greek mesēmbria midday (from mes- + hēmera day) + anthemon flower, from anthos — more at anthology
First Known Use: 1753
Seen and Heard
What made you want to look up mesembryanthemum? Please tell us where you read or heard it (including the quote, if possible).