1) An infection of the uterus 2) Dog disease 
Pyometra or pyometrea is a uterine infection. Though it is most commonly known as a disease of the unaltered female dog, it is also a notable human disease. It is also seen in female cats (queens), rabbits, hamsters, ferrets, rats and guinea pigs. Pyometra is an important disease to be aware of for any dog owner because of the sudden nature of the...
Infection of the uterus.
Accumulation of pus in the uterine cavity. ... Origin: pyo-+ G. Metra, uterus ... (05 Mar 2000) ... 
(pi″o-me´trә) an accumulation of pus within the uterus.
Type: Term Pronunciation: pī′ō-mē′tră Definitions: 1. Accumulation of purulent material in the uterine cavity.
Accumulation of pus within the uterus, resulting usually from a severe bacterial infection.
pyometra A collection of purulent matter in the uterus.
An infection of the uterus.
An accumulation of pus in the uterine cavity.
Infection of the uterus.Pyometra is infection of the uterus that occurs during diestrus, 3-6 weeks after ovulation. It is commonly seen in bitches older than 5 years. Pyometra is also referred to as cystic endometrial hyperplasia (CEH) which is the term descriptive of the morphological changes occurring in the uterus. Hormones, primarily progesterone which is secreted fro...The accumulation of pus inside the uterus.