1875, in the meaning defined above
hypobenthos
hypoblast
hypobranchial
“Hypoblast.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hypoblast. Accessed 20 Aug. 2024.
called also endoblast, entoblast
Britannica.com: Encyclopedia article about hypoblast
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!
See Definitions and Examples »
Get Word of the Day daily email!
Share