Definition of mesenchyme in English:

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Pronunciation: /ˈmezənˌkīm/
Pronunciation: /ˈmesənˌkīm/


A loosely organized, mainly mesodermal embryonic tissue that develops into connective and skeletal tissues, including blood and lymph.
Example sentences
  • Derived from embryonic mesoderm, mesenchyme is the first connective tissue formed.
  • The branchial arches begin as cylindrical cores of mesenchyme sandwiched between continuous sheets of epidermal ectoderm and internal endoderm.
  • In the sea-urchin embryo, for instance, the primary mesenchyme originates from epithelial cells of the blastula by their losing cadherins and producing enzymes that allow them to invade the basal lamina.



Pronunciation: /ˌmezˌenˈkīməl/ Pronunciation: /ˌmes-/
Example sentences
  • All animals, including the essentially epithelial cnidarians, nevertheless have the capacity to produce mesenchymal cells.
  • In vertebrates, the limb apical epidermis promotes proliferation and inhibits differentiation of underlying mesenchymal cells.
  • While turning an undistinguished group of mesenchymal cells into muscle is a complex transformation, that transformation can be turned on or off with a set of very simple commands.


Late 19th century: from Greek mesos 'middle' + enkhuma 'infusion'.

For editors and proofreaders

Syllabification: mes·en·chyme

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