Share this entry

Share this page

mesoderm

Line breaks: meso|derm
Pronunciation: /ˈmɛsə(ʊ)dəːm
 
, ˈmɛz-, ˈmiːs-, ˈmiːz-/

Definition of mesoderm in English:

noun

[mass noun] Embryology
The middle layer of cells or tissues of an embryo, or the parts derived from this (e.g. cartilage, muscles, and bone).
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: /mɛsə(ʊ)ˈdəːm(ə)l, mɛz-, miːs-, miːz-/
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.

Definition of mesoderm in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

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

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day terpsichorean
Pronunciation: ˌtəːpsɪkəˈriːən
adjective
relating to dancing