What does bilaterian mean?
Definitions for bilaterian
bi·la·te·ri·an
This dictionary definitions page includes all the possible meanings, example usage and translations of the word bilaterian.
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Wiktionary
bilateriannoun
Any animal that has bilateral symmetry, namely those of the clade Bilateria
Wikipedia
bilaterian
The Bilateria or bilaterians are animals with bilateral symmetry as an embryo, i.e. having a left and a right side that are mirror images of each other. This also means they have a head and a tail (anterior-posterior axis) as well as a belly and a back (ventral-dorsal axis). Nearly all are bilaterally symmetrical as adults as well; the most notable exception is the echinoderms, which achieve secondary pentaradial symmetry as adults, but are bilaterally symmetrical during embryonic development. Most animals are bilaterians, excluding sponges, ctenophores, placozoans and cnidarians. For the most part, bilateral embryos are triploblastic, having three germ layers: endoderm, mesoderm, and ectoderm. Except for a few phyla (i.e. flatworms and gnathostomulids), bilaterians have complete digestive tracts with a separate mouth and anus. Some bilaterians lack body cavities (acoelomates, i.e. Platyhelminthes, Gastrotricha and Gnathostomulida), while others display primary body cavities (deriving from the blastocoel, as pseudocoeloms) or secondary cavities (that appear de novo, for example the coelom).
Numerology
Chaldean Numerology
The numerical value of bilaterian in Chaldean Numerology is: 7
Pythagorean Numerology
The numerical value of bilaterian in Pythagorean Numerology is: 1
Translations for bilaterian
From our Multilingual Translation Dictionary
- διμερείςGreek
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"bilaterian." Definitions.net. STANDS4 LLC, 2024. Web. 5 Jun 2024. <https://www.definitions.net/definition/bilaterian>.
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