perforated substance

noun

Medical Definition of perforated substance

: any of three small areas on the lower surface of the brain that are perforated by many small openings for blood vessels and that are situated two anteriorly at the commencement of the sylvian fissure and one posteriorly between the mammillary bodies in front and the cerebral peduncles laterally

called also perforated space, perforate space

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“Perforated substance.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/perforated%20substance. Accessed 23 Oct. 2020.

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