Dactinomycin

Part of speech: noun

Definitions

1. A chemotherapy drug that targets specific cancers and works by blocking RNA synthesis in cells, derived from actinobacteria to combat malignant growths
2. This agent, obtained from soil bacteria, interferes with cellular RNA production to treat various tumors and is utilized in cancer therapies
3. A medicine derived from bacteria used in chemotherapy that halts RNA production to inhibit cancer cell growth

Etymology: Dactinomycin is a compound word: "D" followed by "actinomycin." The "D" is a letter-based label rather than a Greek or Latin root. It was chosen to distinguish this compound from other members of the actinomycin family, which were named and numbered by their discoverers in the same way. Actinomycin itself takes its name from the bacterial genus that produces it, "Actinomyces," whose name combines the Greek "aktis," meaning ray, with "mykes," meaning fungus, a reference to the ray-like growth of these organisms in culture. The "-in" ending is the chemical convention used for many antibiotics and other substances isolated from microbes, so the name follows a pattern rather than recording a single event. The word's shape therefore tells you about its lineage: a letter marking a specific variant, attached to a base name that points back to the microbe it came from.

Synonyms: actinomycin D