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rachis

n. 脊椎,脊柱,花轴

脊椎,脊柱,花轴

WordNet (r) 3.0 (2006) (WordNet)

rachis
n 1: axis of a compound leaf or compound inflorescence
2: the series of vertebrae forming the axis of the skeleton and
protecting the spinal cord; "the fall broke his back" [synonym:
{spinal column}, {vertebral column}, {spine}, {backbone},
{back}, {rachis}]

The Collaborative International Dictionary of English v.0.48 (gcide)

Rachis \Ra"chis\ (r[=a]"k[i^]s), n.; pl. E. {Rachises}
(r[=a]"k[i^]s*[e^]z), L. {Rachides} (r[a^]k"[i^]*d[=e]z).
[NL., fr. Gr. "ra`chis, -ios.] [Written also {rhachis}.]
1. (Anat.) The spine; the vertebral column.
[1913 Webster]

2. (Bot. & Zool.) Same as {Rhachis}.
[1913 Webster]

English-French (Internet Dictionary Project)

rachis[Noun]

English-Italian (Internet Dictionary Project)

rachide[Noun]

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英文字典中文字典相关资料:

Rachis - Wikipedia
In plants, a rachis is the main axis of a compound structure It can be the main stem of a compound leaf, such as in Acacia or ferns, or the main, flower-bearing portion of an inflorescence above a supporting peduncle
RACHIS Definition Meaning - Merriam-Webster
The meaning of RACHIS is an axial structure an axial structure: such as; the elongated axis of an inflorescence; an extension of the petiole of a compound leaf that bears the leaflets… See the full definition
RACHIS Definition Meaning | Dictionary. com
Rachis definition: the axis of an inflorescence when somewhat elongated, as in a raceme See examples of RACHIS used in a sentence
RACHIS definition and meaning | Collins English Dictionary
the female reproductive organ of flowering plants, consisting of an ovary, style (sometimes absent), and stigma The carpels are separate or fused to form a single pistil 3 meanings: 1 botany the main axis or stem of an inflorescence or compound leaf 2 ornithology the shaft of a feather, esp the Click for more definitions
Rachis - an overview | ScienceDirect Topics
The rachis tapers off toward the top and is grooved longitudinally It possesses three types of hairs: (i) the fine types spread in the rachel furrows; (ii) the long hairs on the rachel ridges; and (iii) the scarbid hairs on the ridges The rachis elongates and forms branches and branchlets with a rapid increase in dimensions
RACHIS | English meaning - Cambridge Dictionary
RACHIS definition: 1 the central stem of a leaf or flower spike that has several parts: 2 the spine (= line of… Learn more
Rachis - Definition, Meaning Synonyms | Vocabulary. com
DISCLAIMER: These example sentences appear in various news sources and books to reflect the usage of the word ‘rachis' Views expressed in the examples do not represent the opinion of Vocabulary com or its editors
Rachis: Central Axis of Inflorescence - PlantPropagationTips. com
The rachis plays a crucial role in supporting the flowers within an inflorescence It acts as the central axis from which the flowers branch out, providing stability and structure to the overall floral arrangement
Rachis - Definition, Usage Quiz | Ultimate Lexicon
Rachis In biology, particularly in botany and anatomy, the term “rachis” has specific meanings: Botany: In botany, a rachis refers to the main axis or “stem” of an inflorescence or compound leaf This structure holds several components such as leaflets, flowers, or pinnae
Rachis Definition Meaning - YourDictionary
The main stem of an elongated inflorescence, as in a grass The principal axis of an inflorescence or of a compound leaf Spinal column The shaft of a feather, esp that part bearing the barbs (zoology, anatomy) The spine or the vertebrae of the spine From New Latin, from Ancient Greek ῥάχις (rhakhis, “spine, ridge" )

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