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Glite Dictionary
extraembryonic

extraembryonic

1 8.7
Relating to the parts outside the developing baby that help it grow
  • adjective
  • /ˌɛkstrəɛmˈbrɪənɪk/
  • Specialized
: extraembrionario
  • During early development, the placenta is an extraembryonic tissue that plays a crucial role in fetal nourishment.

Examples

  • The yolk sac is an important extraembryonic structure that provides nutrients to the developing embryo.

  • Second, the zygote gives rise to further divisions, resulting in an aggregate of cells, each of which remains equivalent to a zygote in the sense that it can become all or any part of an embryo and its extraembryonic structure.

    Academic text (1990)

  • Vitellointestinal duct or omphalomesenteric duct joins the midgut with the extraembryonic part of the yolk sac.

    Academic text (2007)

  • In mammals, various extraembryonic membranes form that protect and support the growing embryo.

How External

extraembryonic
  • Specialized
1 8.7
embryonic
  • Specialized
37 7.0

Surface Forms

extraembryonic positive

Morphology

extraembryonic = embryonic (transparent) = extra + embryonic

Formed by prefixing 'extra-' to 'embryonic', giving the clear sense 'outside the embryo' that a learner who knows 'embryonic' can infer.

Etymology

Extraembryonic comes from the part extra-, like the common word extra, meaning 'outside', and embryo meaning 'the early form of a baby'. So extraembryonic describes parts that form 'outside the embryo' and help it grow.