radial cleavage

noun

: holoblastic cleavage that is typical of deuterostomes and that is characterized by arrangement of the blastomeres of each upper tier directly over those of the next lower tier resulting in radial symmetry around the pole to pole axis of the embryo compare spiral cleavage

Word History

First Known Use

1973, in the meaning defined above

Time Traveler
The first known use of radial cleavage was in 1973

Dictionary Entries Near radial cleavage

Cite this Entry

“Radial cleavage.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radial%20cleavage. Accessed 13 Apr. 2024.

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