| 释义 |
Definition of invagination in English: invaginationnoun ɪnˌvadʒɪˈneɪʃ(ə)nɪnˌvædʒəˈneɪʃən mass nounAnatomy Biology 1The action or process of being turned inside out or folded back on itself to form a cavity or pouch. 〔主剖，生〕内陷 Example sentencesExamples - The initial conditions for the appearance of feathers also probably resides in processes common to all ammonites and include placode formation, invagination, and mesenchymal-epithelial interactions.
- In the chick embryo, for example, the ectoderm initially expresses L-CAM; during neural plate invagination, however, L-CAM expression is replaced by that of N-cadherin.
- This indicates a level of plasma membrane invagination comparable with mammalian skeletal muscle.
- Catheters with multiple side holes on several planes are less likely to cause invagination of airway mucosa into the catheter than those with single side or end holes.
- Specifically, the ventral invagination and migration of mesodermal precursors in the embryo are severely impaired, as are head involution, dorsal closure, and the migration of gonadal precursors.
- 1.1count noun A cavity or pouch so formed.
（内陷形成的）囊腔 Example sentencesExamples - There is a refracting secretion in the space of this invagination presumably protecting the photoreceptor cells.
- As is typical, many of the latter showed reactive changes, such as large, variably sized nuclei; intranuclear invaginations; and multinucleation.
- These invaginations represent placental outgrowths and they extend towards the centre, enclosing the central hole into a triangular slit.
- Intranuclear cytoplasmic invaginations, similar to that seen in non-neoplastic hepatocytes (or in metastatic melanoma) are also frequent.
- The internodes have invaginations that are termed cupules.
OriginMid 17th century: from modern Latin invaginatio(n-), based on in-2 'into' + Latin vagina 'sheath'. Definition of invagination in US English: invaginationnouninˌvajəˈnāSHənɪnˌvædʒəˈneɪʃən Anatomy Biology 1The action or process of being turned inside out or folded back on itself to form a cavity or pouch. 〔主剖，生〕内陷 Example sentencesExamples - In the chick embryo, for example, the ectoderm initially expresses L-CAM; during neural plate invagination, however, L-CAM expression is replaced by that of N-cadherin.
- Specifically, the ventral invagination and migration of mesodermal precursors in the embryo are severely impaired, as are head involution, dorsal closure, and the migration of gonadal precursors.
- The initial conditions for the appearance of feathers also probably resides in processes common to all ammonites and include placode formation, invagination, and mesenchymal-epithelial interactions.
- Catheters with multiple side holes on several planes are less likely to cause invagination of airway mucosa into the catheter than those with single side or end holes.
- This indicates a level of plasma membrane invagination comparable with mammalian skeletal muscle.
- 1.1 A cavity or pouch so formed.
（内陷形成的）囊腔 Example sentencesExamples - These invaginations represent placental outgrowths and they extend towards the centre, enclosing the central hole into a triangular slit.
- There is a refracting secretion in the space of this invagination presumably protecting the photoreceptor cells.
- Intranuclear cytoplasmic invaginations, similar to that seen in non-neoplastic hepatocytes (or in metastatic melanoma) are also frequent.
- As is typical, many of the latter showed reactive changes, such as large, variably sized nuclei; intranuclear invaginations; and multinucleation.
- The internodes have invaginations that are termed cupules.
OriginMid 17th century: from modern Latin invaginatio(n-), based on in- ‘into’ + Latin vagina ‘sheath’. |