|dīˌh]īdrō, dī|h]+ noun
Etymology: International Scientific Vocabulary dihydr- + streptomycin
: an antibiotic C 21 H 41 N 7 O 12 made by hydrogenating streptomycin and considered by some authorities to be less toxic than streptomycin with which it is often administered chiefly in the treatment of tuberculosis, tularemia, and infections caused by gram-negative organisms