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dichasium

[ dahy-key-zhuhm, -zhee-uhm, -zee-uhm ]

noun

, Botany.
, plural di·cha·si·a [dahy-, key, -zh, uh, -zhee-, uh, -zee-, uh].
  1. a form of cymose inflorescence in which each axis produces a pair of lateral axes.


dichasium

/ daɪˈkeɪzɪəm /

noun

  1. a cymose inflorescence in which each branch bearing a flower gives rise to two other flowering branches, as in the stitchwort Compare monochasium
“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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Derived Forms

  • diˈchasial, adjective
  • diˈchasially, adverb
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Other Words From

  • di·chasial adjective
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Word History and Origins

Origin of dichasium1

1870–75; < New Latin < Greek díchas ( is ) a division, derivative of dicházein to cleave (derivative of dícha apart) + Latin -ium -ium
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Word History and Origins

Origin of dichasium1

C19: New Latin, from Greek dikhasis a dividing, from dikhazein to divide in two, from dikha in two
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Example Sentences

The term dichasium has also been applied to this form of cyme.

In some members of the order, as Dianthus barbatus, D. carthusianorum, &c., in which the peduncles are short, and the flowers closely approximated, with a centrifugal expansion, the inflorescence has the form of a contracted dichasium, and receives the name of fascicle.

Sometimes, especially towards the summit of a dichasium, owing to the exhaustion of the growing power of the plant, only one of the bracts gives origin to a new axis, the other remaining empty; thus the inflorescence becomes unilateral, and further development is arrested.

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