Definition of macadamia nut
: a hard-shelled nut of an Australian evergreen tree (genus Macadamia, especially M. integrifolia or M. tetraphylla) of the protea family that somewhat resembles the filbert and is cultivated extensively in Hawaii —called also macadamia
From the M-W Editors
Origin and Etymology of macadamia nut
New Latin Macadamia, from John Macadam †1865 Australian chemist
First Known Use: 1929
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