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a brand of thiopental sodium.
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|Noun||1.||Pentothal - barbiturate that is a hygroscopic powder (trade name Pentothal) that is a strong barbiturate that acts rapidly; induces a relaxed state when injected as a general anesthetic|
barbiturate - organic compound having powerful soporific effect; overdose can be fatal
truth drug, truth serum - an intravenous anesthetic drug that has a hypnotic effect; induces relaxation and weakens inhibitions; is believed to induce people to talk freely