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phthiocol

noun

phthi·​o·​col ˈthī-ə-ˌkȯl How to pronounce phthiocol (audio) -ˌkōl How to pronounce phthiocol (audio)
: a yellow crystalline quinone C11H8O3 with vitamin K activity that is isolated from the human tubercle bacillus and also made synthetically

Cite this Entry

“Phthiocol.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/phthiocol. Accessed 1 Dec. 2025.

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