Potentially Infectious Biomedical Waste includes, but is not limited to the following: 1  Cultures and stocks of infectious agents and associated biologicals, including cultures from medical and pathological laboratories, from research and industrial laboratories.
1 (biology) During meiosis, the separation of chromosomes (homologous in meiosis I, and sister chromatids in meiosis II). ( 2 in mathematics): conjunction. ( 3 in mathematics): logical connective. ( in logic): inclusive disjunction.
Definition of Nondisjunction. Failure of proper separation of two homologous chromosomes or the sister chromatids during cell division is termed as nondisjunction. History. Time attests to the discovery of nondisjunction in the spring of 1910 at the hands of Calvin Bridges and Thomas Hunt Morgan.