[(Science: drug) Commonly used antibiotic in cell culture media: acts only on prokaryotes and blocks transition from initiation complex to chain elongating ribosome. isolated originally from a soil streptomycete.
[1. An antibiotic agent obtained from Streptomyces griseus that is active against the tubercle bacillus and a large number of gram-positive and gram-negative bacteria; also used in the form of dihydrostreptomycin (aldehyde of streptomycin reduced to CH2OH). It is used virtually exclusively in the treatment of tuberculosis; toxicity includes eighth cranial nerve damage leading to deafness and/or vestibular dysfunction.