Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
Related to morula: blastocoel, trophoblast, embryoblast


 (môr′yə-lə, môr′ə-)
n. pl. mor·u·lae (-lē′)
The spherical embryonic mass of blastomeres formed before the blastula and resulting from cleavage of the fertilized ovum.

[New Latin mōrula, feminine diminutive of Latin mōrum, mulberry.]

mor′u·lar adj.
mor′u·la′tion n.


n, pl -las or -lae (-ˌliː)
(Biology) embryol a solid ball of cells resulting from cleavage of a fertilized ovum
[C19: via New Latin, diminutive of Latin morum mulberry, from Greek moron]
ˈmorular adj


(ˈmɔr ʊ lə, -yʊ-)

n., pl. -las, -lae (-ˌli)
the mass of cells resulting from the cleavage of an ovum before the formation of a blastula.
[1855–60; < New Latin, = Latin mōr(um) mulberry + -ula -ule]
mor′u•lar, adj.


The ball of cells produced from a fertilized cell after three days. See zygote.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.morula - a solid mass of blastomeres that forms when the zygote splitsmorula - a solid mass of blastomeres that forms when the zygote splits; develops into the blastula
conceptus, fertilized egg, embryo - an animal organism in the early stages of growth and differentiation that in higher forms merge into fetal stages but in lower forms terminate in commencement of larval life


n. mórula, masa esférica y sólida de células que resulta de la división celular del óvulo fecundado.
References in periodicals archive ?
A number of gastropod species have been studied extensively for imposex and are known to serve as a useful bioindicator of organotin contamination across the globe such as Nucella lapillus, Ocenebra erinacea, Morula granulata, Thais clavigera, T.
En esta etapa el embrion comienza a funcionar como un organismo llamado morula, el cual es relativamente independiente del ambiente uterino y su supervivencia parece depender de su programacion genetica (10).
Estado de desarrollo de oocitos fertilizados y alteracion de la mucosa endometrial a diferentes estadios despues del servicio Animal Dias No de No de huevos postservicio CL (1) o embrion (2) A 3 1 1 B 4 2 2 C 4 1 1 D 5 1 * Animal Estadio Alteracion de la mucosa endometrial A Morula (8-16 blastometros) Hiperemia, petequias B Morula (16-32 blastometros) Hiperemia, petequias C Morula (16 blastometros) Hiperemia, petequias D -- Hiperemia, petequias (1) Cuerpo luteo (2) Recuperados en oviducto * No se recupero
tissoti (Petit, 1853), Morula granulata (Duclos, 1832), Turricula javana (Linnaeus, 1767) and Babylonia spirata (Linnaeus, 1758; Swainson, 1822), belonging to two orders namely, Archaeo- and Neogastropoda and five families (Trochidae, Turbinidae, Thaidae, Turridae, and Buccinidae) were studied.
It has been shown that IR was expressed in hamster preimplantation embryos from the morula stage onwards while GLUT4 was not detected at mRNA level (Tonack et al.
At the contact site between two allogeneic colonies, morula cells, a type of hemocyte, are released from the tips of the blood vessels and discharge their vacuolar contents into the tissue at the contact site (Hirose, 2003).
The morula forms at 5:00-5:30 h and embryo diameter is 135 [+ or -] 5 [micro]m (Stage IV).
En un estudio preliminar [50], 89 embriones caprinos de 1-8 celulas no sobrepasaron el estado de morula cuando se cultivaron en medio de Whitten o Ham F10 suplementados con albumina serica bovina (BSA) (1,5%) o suero fetal bovino (10%).
However, this technique requires an efficient in vitro culture system to allow embryo development up to compacted morula or blastocyst, because only at these advanced stages can the zona-free embryos be transferred into recipients.
In another histochemical study of the hypobranchial gland of the marine muricid Morula granulata Srilakshmi (1991) described a similar basic arrangement of cells, like described before by Bolognani-Fantin and Ottaviani (1981) and noted the presence of neuro-sensory cells, which form the hypobranchial nerve.
1994a) obtained a higher number of embryos reaching the morula stage following cumulus versus oviductal cell co-culture, but a different oxygen tension was used during embryo culture.