rachis
Use Rachis in a sentence
kɪs noun, plural ra·chis·es, rach·i·des [rak-i-deez, rey-ki-] .
[rak-i-deez, rey-ki-] . 1.
Botany.
a.
the axis of an inflorescence when somewhat elongated, as in a raceme.
b.
(in a pinnately compound leaf or frond) the prolongation of the petiole along which the leaflets are disposed.
c.
any of various axial structures.
2.
Ornithology. the part of the shaft of a feather bearing the web. See illus. under feather.
3.
Anatomy, spinal column.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Link To rachis
00:10
Rachis
is always a great word to know.
So is ninnyhammer. Does it mean:
| a chattering or flighty, light-headed person. |
| a fool or simpleton; ninny. |
Collins
World English Dictionary
rachis or rhachis (ˈreɪkɪs) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —n , pl rachises, rhachises, rachides, rhachides | |
| 1. | botany the main axis or stem of an inflorescence or compound leaf |
| 2. | ornithol the shaft of a feather, esp the part that carries the barbs |
| 3. | another name for spinal column |
| [C17: via New Latin from Greek rhakhis ridge] | |
| rhachis or rhachis (ˈreɪkɪs, ˈrækɪˌdiːz, ˈreɪ-) | |
| —n | |
| [C17: via New Latin from Greek rhakhis ridge] | |
| rachial or rhachis | |
| —adj | |
| rhachial or rhachis | |
| —adj | |
| rachidial or rhachis | |
| —adj | |
| rhachidial or rhachis | |
| —adj | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary
rachis ra·chis (rā'kĭs)
n. pl. ra·chis·es or rach·i·des (rāk'ĭ-dēz', rā'kĭ-)
See spinal column.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
| rachis (rā'kĭs) Pronunciation Key
Plural rachises or rachides (rāk'ĭ-dēz', rā'kĭ-) A main axis or shaft, such as the main stem of an inflorescence, the stalk of a pinnately compound leaf, the shaft of a feather, or the spinal column. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Example sentences
The spikelets are borne on short racemes which branch from the rachis in paniculate fashion.
The rachis has a swollen base, and the entire bipinnately compound leaf is arranged in alternate fashion along the stout twig.
Spikelet cylindric, placed flatwise at each joint of the rachis and fitting into it.
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