THIOPENTAL Scrabble 15 Words With Friends 17 Definition noun barbiturate that is a hygroscopic powder (trade name Pentothal) that is a strong barbiturate that acts rapidly. — synonyms: thiopental_sodium, thiopentobarbital_sodium, Pentothal See all 472 words you can make from THIOPENTAL → 10-letter words Words starting with T Words ending with L ← Unscramble different letters