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[ruh-kil-uh] /rəˈkɪl ə/
noun, plural rachillae
[ruh-kil-ee] /rəˈkɪl i/ (Show IPA).
a small or secondary rachis, as the axis of a spikelet in a grass inflorescence.
Origin of rachilla
1835-45; < New Latin, diminutive of rachis rachis Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for rachilla
  • It has a mid-sized to small kernel and the rachilla is mid to long with long hairs.
  • Kernels have adhering, finely wrinkled hulls and long rachilla hairs.
  • Only the portion of the rachilla that bears flowers is exposed.
British Dictionary definitions for rachilla


(in grasses) the short stem of a spikelet that bears the florets
Word Origin
C19: from New Latin, diminutive of rachis
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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rachilla in Science
Plural rachillae (rə-kĭl'ē)
The stalk that bears the florets in the spikelets of grasses and similar plants, such as rushes and sedges. The rachilla often has a zigzag shape, with florets at each point at which the orientation of the rachilla turns.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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