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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
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 shoot apex elongates into the main axis of the inflorescence, which is called the rachis 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
Rachis - Definition, Meaning Synonyms | Vocabulary. com
rachis ˈreɪkɪs IPA guide Definitions of rachis noun axis of a compound leaf or compound inflorescence see more
rachis - Wiktionary, the free dictionary
rachis (plural rachises or rachides) (obsolete, zoology, anatomy) The spinal column, or the vertebrae of the spine [17th–19th c ] (zoology) An anatomical shaft or axis in a marine invertebrate [from 18th c ]
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 of rachis by The Free Dictionary
Define rachis rachis synonyms, rachis pronunciation, rachis translation, English dictionary definition of rachis n pl ra·chis·es or rach·i·des 1 a The main stem of an elongated inflorescence, as in a grass b The main axis of a pinnately compound leaf or of a fern
What does rachis mean? - Definitions. net
Rachis is a term used in biology to refer to the main stem or axis of a plant or animal structure, from which other parts such as branches, leaves, or feathers extend or grow It can refer to the main shaft of an inflorescence in plants, spine in vertebrates, or central shaft in feathers of birds

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