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mesoderm

Syllabification: mes·o·derm
Pronunciation: /ˈmezəˌdərm, ˈmē-
 
/

Definition of mesoderm in English:

noun

Embryology
The middle layer of an embryo in early development, between the endoderm and ectoderm.
Example sentences
  • The stem cells for hematopoiesis in mammals are derived from mesoderm in the yolk sac blood islands and a region of the aorta.
  • Teratomas are germ cell tumors composed of various tissue elements representing more than one embryonic layer (ectoderm, mesoderm, and endoderm).
  • Structures derived from ectoderm, mesoderm, and endoderm are commonly represented.

Origin

late 19th century: from meso- 'middle' + Greek derma 'skin'.

Derivatives

mesodermal

1
Pronunciation: /ˌmezəˈdəməl, mē-/
adjective
Example sentences
  • In most polychaetes, the ectodermal and mesodermal derivatives of the growth zone become incorporated into segmental tissues in an anterior-posterior sequence.
  • The cells of these paraxial mesodermal cords eventually coalesce into the somites.
  • Alternative and related hypotheses include those that deal explicitly with engrailed in mesodermal units, chordate evolution, and terminal posterior addition of iterated elements in development.

mesodermic

2
Pronunciation: /-ˈdərmik/
adjective
Example sentences
  • A coelom is a body cavity lined by a mesodermic epithelium.
  • The primacy of the vascular mesodermic network could explain facts not understood on a neural basis.
  • A key stage in the development of higher animals is the specification of endodermic and mesodermic cells.

Definition of mesoderm in:

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