blastodisc

noun

blas·​to·​disc ˈbla-stə-ˌdisk How to pronounce blastodisc (audio)
: the embryo-forming portion of an egg with discoidal cleavage usually appearing as a small disc on the upper surface of the yolk mass see egg illustration

Word History

Etymology

blasto- + disc

First Known Use

1878, in the meaning defined above

Time Traveler
The first known use of blastodisc was in 1878

Dictionary Entries Near blastodisc

Cite this Entry

“Blastodisc.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/blastodisc. Accessed 31 Oct. 2024.

Medical Definition

blastodisc

noun
blas·​to·​disc
variants or blastodisk
: the embryo-forming portion of an egg with discoidal cleavage usually appearing as a small disc on the upper surface of the yolk mass
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