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microvillus Line breaks: micro|vil¦lus
Pronunciation: /ˌmʌɪkrəʊˈvɪləs/

Definition of microvillus in English:

noun (plural microvilli ˌmʌɪkrəʊˈvɪlʌɪˌmʌɪkrəʊˈvɪliː)

Each of a large number of minute projections from the surface of some cells.
Example sentences
  • The diagnosis was confirmed by the ultrastructural demonstration of large desmosomes and long microvilli at the cell surface.
  • The luminal surface of the epithelial cells contained few irregular cytoplasmic projections, but cilia or microvilli were absent.
  • These cells are sparse but are easily distinguished from other epithelial cells by the presence of a tuft of blunt, squat microvilli on the cell surface.


Example sentences
  • The underlying epithelial cells show irregular light nuclei containing discrete nucleoli and a microvillar layer that is presumably secreting the basal layer of cuticle (arrow).
  • Equally a mystery are the mechanisms responsible for the construction and destruction of the microvillar membrane with changes in microvillus length.
  • As the core filaments polymerize, other microvillar proteins (villin, fimbrin, etc.) are mobilized from the cytoplasm and inserted.
Definition of microvillus in:
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