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pyxidium

[pik-sid-ee-uh m] /pɪkˈsɪd i əm/
noun, plural pyxidia
[pik-sid-ee-uh] /pɪkˈsɪd i ə/ (Show IPA).
Botany
1.
a seed vessel that opens transversely, the top part acting as a lid, as in the purslane.
Origin
1825-1835
1825-35; < Neo-Latin < Greek pyxídion a little box, equivalent to pyxid- (stem of pyxís) a box + -ion diminutive noun suffix
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for pyxidium

pyxidium

/pɪkˈsɪdɪəm/
noun (pl) -ia (-ɪə), pyxides (ˈpɪksɪˌdiːz)
1.
the dry fruit of such plants as the plantain: a capsule whose upper part falls off when mature so that the seeds are released
Word Origin
C19: via New Latin from Greek puxidion a little box, from puxis box,pyx
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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