aneurysm

https://doi.org/10.1351/goldbook.10395
Abnormal bulging of the wall of an artery or a chamber of the heart.
Note: An aneurysm may present a risk of hemorrhage if it ruptures.
Source:
PAC, 2016, 88, 713. (Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)) on page 723 [Terms] [Paper]