petrotympanic fissure

noun

Medical Definition of petrotympanic fissure

: a narrow transverse slit dividing the glenoid fossa of the temporal bone

called also Glaserian fissure

Learn More about petrotympanic fissure

Cite this Entry

“Petrotympanic fissure.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/petrotympanic%20fissure. Accessed 27 Oct. 2020.

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