blood poisoning

from The Century Dictionary.

• noun See toxemia.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun pathology The presence in the bloodstream of microorganisms or their toxins in sufficient quantity to cause serious illness; sepsis or septicemia.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun invasion of the bloodstream by virulent microorganisms from a focus of infection