Z line

noun

Definition of Z line

: any of the dark thin bands across a striated muscle fiber that mark the junction of actin filaments in adjacent sarcomeres

First Known Use of Z line

1916, in the meaning defined above

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Zlatoust

Z line

zloty

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Cite this Entry

“Z line.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Z%20line. Accessed 17 May. 2022.

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More Definitions for Z line

Z line

noun

Medical Definition of Z line

: any of the dark bands across a striated muscle fiber that mark the junction of actin filaments in adjacent sarcomeres

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