any of several rod-shaped or filamentous, aerobic or anaerobic bacteria of the phylum Chlamydobacteriae, or in some classification schemes, the order Actinomycetales, certain species of which are pathogenic for humans and animals.
any bacterium of the group Actinomycetes, usually filamentous in form
actinomycete ac·ti·no·my·cete (āk’tə-nō-mī’sēt’, -mī-sēt’)
Any of various filamentous or rod-shaped, often pathogenic microorganisms of the genus Actinomyces.
A member of the the family Actinomycetaceae.
A member of the order Actinomycetales.
Any of various bacteria belonging to the phylum Actinobacteria that grow as branching filaments resembling fungal hyphae and are found in soil. The filaments often grow in colonies but sometimes break off into rod-shaped structures. Many species of actinomycetes produce important antibiotics such as streptomycin, while others are pathogenic in humans and other animals, especially for skin diseases. One species lives symbiotically in the roots of alders and conducts nitrogen fixation. Because of their resemblance to fungi, actinomycetes were once classified as fungi.
- Actinomycin d
. 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) n. An antibiotic isolated from bacteria and used as an antineoplastic agent in the treatment of certain cancers.
any of a group of related antibiotics derived from several species of streptomyces bacteria, used against susceptible bacteria and fungi and in the treatment of various cancers. noun any of several toxic antibiotics obtained from bacteria of the genus Streptomyces, used in treating some cancers; the most commonly used is dactinomycin (actinomycin D) actinomycin ac·ti·no·my·cin […]
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) n. 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.