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orthostichy

[awr-thos-ti-kee] /ɔrˈθɒs tɪ ki/
noun, plural orthostichies. Botany.
1.
a vertical rank or row.
2.
an arrangement of members, as leaves, at different heights on an axis so that their median planes coincide.
Origin of orthostichy
1870-1875
1870-75; ortho- + Greek -stichia alignment, equivalent to stích(os) row (see stich1) + -ia -y3
Related forms
orthostichous, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for orthostichy

orthostichy

/ɔːˈθɒstɪkɪ/
noun (pl) -chies
1.
an imaginary vertical line that connects a row of leaves on a stem
2.
an arrangement of leaves so connected
Compare parastichy
Derived Forms
orthostichous, adjective
Word Origin
C19: from ortho- + Greek stikhos line
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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