Uterus that is divided into two lateral horns as a result of imperfect fusion of the paired embryonic tubes from which the uterus is formed.
Note: In humans it is a uterine malformation, but in some mammalian species, including rodents and pigs, it is normal.
Source:
PAC, 2016, 88, 713. 'Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)' on page 729 (https://doi.org/10.1515/pac-2015-1202)