Skip to main content
Glite Dictionary
allantoic

allantoic

1 9.9
Relating to the allantois, a part of an embryo that holds waste and helps gas exchange
  • adjective
  • /ˌælənˈtoʊɪk/
  • Specialized
: alantoico
  • The allantoic fluid serves as a vital source of nutrients for the developing embryo.
  • allantoic fluid

Examples

  • The virus was propagated in the allantoic cavity of 9-day-old embryonated chicken eggs by the standard protocol (Dennis, 2008) under sterile conditions.

    Academic text (2015)

  • Pooled allantoic fluid was used for each study.

    Academic text (2014)

  • Researchers studied the allantoic membranes to understand embryonic development in birds.

  • In reptiles, the allantoic layer plays a crucial role in the exchange of gases during development.

Surface Forms

allantoic positive

Morphology

allantoic = allantois (transparent) = allantois + ic

The adjective is formed by the regular suffix '-ic' on the noun 'allantois' to mean 'relating to the allantois'; the derivation is morphologically regular though both items are technical.

Etymology

The word allantoic comes from allantois and the Greek root allanto-, which meant 'sausage-shaped' because the allantois is a sausage-like sac in an embryo. So allantoic describes things that belong to that sac, which help move 'waste' and 'gases' in bird, reptile, and mammal embryos.