intercalated disc
noun
in·ter·ca·lat·ed disc
variants
or intercalated disk
: any of the specialized regions of the sarcolemma and underlying cytoplasm of cardiac muscle cells that comprise the longitudinal and end-to-end junctions between adjacent cells and that function to connect them mechanically and electrically
Cite this Entry
“Intercalated disc.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/intercalated%20disc. Accessed 4 Nov. 2025.
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