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Related to embryonic period: fetal period


Of, pertaining to, or in the condition of an embryo.


(ĕm′brē-ŏn′ĭk) also


1. Of, relating to, or being an embryo.
2. also embryotic (-ŏt′ĭk) Rudimentary; incipient: an embryonic nation, not yet self-governing.

em′bry·on′ic·al·ly adv.


(1) Unborn, in utero.
(2) Undeveloped, developing, unformed, fledgling.


adjective Undeveloped, related to an embryo


Pertaining to, or to the state of being, an EMBRYO.


In the life cycle of the round worm, a very early life stage occurring within the uterus of the female round worm.
References in periodicals archive ?
At these temperatures, this range in embryonic period falls within that typical of dorid nudibranchs with similarly sized eggs and planktotrophic development and is also at least a week shorter than embryonic periods known for species with non-feeding modes of development in the NE Pacific Ocean (Hadfield and Switzer-Dunlap 1987; Goddard 1996; Goddard and Hermosillo 2008).
However, it is estimated that most losses of pregnancy occur in the first 50 d of gestation, during the embryonic period. Humblot (4) suggested that luteolysis and return to estrus prior to day 24 might be linked with early embryonic death; but, if the corpus luteum (CL) is maintained and return to estrus is delayed beyond day 24, it could point to embryonic loss occurring after day 16 of gestation.
* By stage 10 of the embryonic period (circa 22 days), the embryo is 2.0 to 3.5 mm long at its greatest dimension.
It is suggested that the immobility of nodal cilia inhibits the flow of extra-embryonic fluid during the embryonic period which manifests later as situs inversus.
The group 2 (short- term PRESI) had lowest mortality rate in three different embryonic period; by 3.3, 0, 3.3, respectively for early, mid and late embryonic period (Fig.
The percentage of females that parasitized, the parasitisto rate (number of eggs parasitized/number of eggs in the cardboard), embryonic period (between egg to adult emergence), emergence rate (eggs with a hole made were counted to evaluate), number of individuals/egg, sex ratio (number of females/number of females + males) and longevity of female offspring were evaluated.
All tests developed to date cover only the embryonic period and probably predict only the potential to cause structural malformation.
Deletion of [e.sub.1] micromeres prevents the formation of ctene rows and their associated endodermal canals during the embryonic period, supporting this cell fate assignment[3, 5].
During early embryonic period it supplies the blood to lower limb.