What does gastrulae mean?
Gastrulae is the plural of gastrula, a term in embryology for an early stage of animal development. During gastrulation, the embryo changes from the blastula into a more organized form, with cells moving inward and primary germ layers forming. These layers later give rise to the major tissues and organs of the body. A blastopore also typically forms during this process, although its subsequent developmental role varies among animal groups. Gastrulae is therefore used when comparing embryos, describing multiple developmental stages, or discussing patterns across species. The word belongs primarily to scientific and academic writing rather than everyday language. It is especially useful in zoology, developmental biology, and comparative embryology, where precise terminology helps distinguish the initial formation of germ layers from the later differentiation of organs and tissues.
nounThe plural of gastrula: an early embryonic stage in which the blastula reorganizes to form primary germ layers, usually through invagination and the development of a blastopore.
- Plural of gastrula, an early embryonic stage characterized by the formation of germ layers and a blastopore.
"The gastrulae of different vertebrate species develop their germ layers in distinct ways."
"In vertebrates, gastrulae form through coordinated cell movements that establish the three primary germ layers."
"Researchers compared gastrulae from several species to investigate how early body plans are organized."
Standard plural of gastrula; gastrulæ is also encountered as a variant plural spelling in technical writing.
"The embryos developed into gastrulae with clearly defined germ layers."
A gastrula is the developmental turning point at which a simple embryonic form begins building the layered body plan of an animal.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of gastrulae
The word comes from New Latin gastrula, a diminutive form of Latin gastēr, meaning “belly” or “stomach.” Latin gastēr was borrowed from Greek gastēr, the source of related English words such as gastric and gastritis. In scientific usage, the diminutive came to refer to a particular early embryonic form before it was established as the standard plural gastrulae.
Related word forms
How gastrulae is actually used
This is technical terminology in embryology and developmental biology. It is not used in ordinary conversation, and the singular gastrula is normally used when discussing one embryo or one developmental stage.
Easily confused with gastrulae
Gastrula is the singular form, while gastrulae is the standard plural used for multiple embryos or multiple examples of this developmental stage.