Definition of invagination in English:

Share this entry

invagination

Pronunciation: /ɪnˌvadʒɪˈneɪʃ(ə)n/

noun

[mass noun] chiefly Anatomy & Biology
1The action or process of being turned inside out or folded back on itself to form a cavity or pouch.
Example sentences
  • This indicates a level of plasma membrane invagination comparable with mammalian skeletal muscle.
  • 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.
  • 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.
1.1 [count noun] A cavity or pouch so formed.
Example sentences
  • Intranuclear cytoplasmic invaginations, similar to that seen in non-neoplastic hepatocytes (or in metastatic melanoma) are also frequent.
  • These invaginations represent placental outgrowths and they extend towards the centre, enclosing the central hole into a triangular slit.
  • As is typical, many of the latter showed reactive changes, such as large, variably sized nuclei; intranuclear invaginations; and multinucleation.

Origin

Mid 17th century: from modern Latin invaginatio(n-), based on in-2 'into' + Latin vagina 'sheath'.

Share this entry
 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.