Definition of bulbus arteriosus
: the dilated part of the aorta just in front of the heart from which the aortic arches arise in vertebrate embryos and in the adult of many lower vertebrates
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Origin and Etymology of bulbus arteriosus
New Latin bulbus arteriosus, literally, arterial bulb & bulbus aortae, literally, bulb of the aorta
Seen and Heard
What made you want to look up bulbus arteriosus? Please tell us where you read or heard it (including the quote, if possible).