thiopental sodium

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A short-acting barbiturate, C₁₁H₁₇N₂O₂SNa, that is used to induce general anesthesia, to induce a relaxed state in psychotherapy, and for euthanasia.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun 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