a cytotoxic polypeptide, C 62 H 86 N 12 O 16 , isolated from the bacterium Streptomyces parvullus, used in the treatment of certain cancers.
dactinomycin dac·ti·no·my·cin (dāk’tə-nō-mī’sīn)
An antibiotic isolated from bacteria and used as an antineoplastic agent in the treatment of certain cancers.
actinomycoma actinomycoma ac·ti·no·my·co·ma (āk’tə-nō-mī-kō’mə) n. A swelling caused by an infection with an actinomycete.
an infectious, inflammatory disease caused by Actinomyces israelii in humans and A. bovis in domestic animals, and characterized by lumpy, often suppurating tumors, especially, about the jaws. Historical Examples Thus in England actinomycosis of the tongue is most prevalent. Special Report on Diseases of Cattle U.S. Department of Agriculture In 1906 we discovered the existence […]
a chemically inert, gaseous, short-lived isotope of radon that is a member of the . Symbol: An; atomic number: 86; atomic weight: 219. noun a radioisotope of radon that is a decay product of radium. Symbol: An or 219Rn; atomic no: 86; half-life: 3.92s another name for actinide
any protozoan of the subclass Actinopoda, including the heliozoans and radiolarians, having stiff, rodlike, radiating pseudopodia. noun any protozoan of the phylum Actinopoda, such as a radiolarian or a heliozoan, having stiff radiating cytoplasmic projections