What does pyemia mean?
Pyemia, also spelled pyaemia, is a chiefly historical medical term for infection of the bloodstream by pus-forming bacteria or their toxins. It commonly arose when an infection spread from a wound or another part of the body into the blood. Although the older term could suggest the literal presence of pus in the circulation, modern medicine generally describes this condition under the broader category of sepsis. The word appeared in nineteenth- and early twentieth-century medical writing, when physicians often named bloodstream infections according to their characteristic material or effect. Today, pyemia is encountered mainly in historical sources, specialist terminology, and older dictionaries, while expressions such as septicemia and blood poisoning are also historically related. Its unusual formation from Greek roots for “pus” and “blood” makes it a vivid example of how medical vocabulary preserves earlier descriptions of disease.
nounAn obsolete term for the presence of pus-forming bacteria or their toxins in the blood, usually resulting from a severe infection elsewhere in the body. The condition is now generally classified as sepsis.
- The presence of pus-forming microorganisms or their toxins in the blood, now generally regarded as a form of sepsis.
"The physician feared that the wound might lead to pyemia."
"The patient developed pyemia after the infected tooth was left untreated."
"In older medical literature, the spread of infection through the bloodstream was commonly described as pyaemia."
The plural is uncommon because the word is now mostly historical or specialized.
"The records describe several cases of pyaemias following severe battlefield wounds."
Pyemia literally means “pus in the blood,” a reminder of how physicians once named infections by the substances they produced.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does pyemia come from?
Pyemia was formed from Greek pyon, meaning “pus,” and haima, meaning “blood.” The combination literally expressed the idea of pus in the blood. The British spelling pyaemia follows a more explicit Greek-style form, while pyemia reflects a simplified English spelling of the same word. The term belongs to a family of medical vocabulary derived from the same Greek root for pus, including pyogenic.
Related word forms
How pyemia is actually used
Pyemia is now chiefly historical or medical-archival. Contemporary clinical usage is less common because the broader term sepsis is preferred, although pyaemia remains recognizable in older texts and in some medical terminology.
Easily confused with pyemia
Pyemia is pus or its causative organisms in the blood, whereas pyorrhea is a discharge of pus, especially from the gums.
Pyemia concerns infection in the blood, while pyosuria is the presence of pus in the urine.