a yellowish-white, hygroscopic powder, CHNOSNa, injected intravenously in solution as a general anesthetic and hypnotic
See thiopental sodium in American Heritage Dictionary 4
(thīˌō-pĕnˈtălˌ, -tôlˌ)
noun
A yellowish-white hygroscopic powder, C11H17N2O2SNa, injected intravenously as a general anesthetic and used in psychotherapy to induce a relaxed state.