M-line

American  

[em-lahyn] / ˈɛmˌlaɪn /

noun

Physics.

1. one of a series of lines M-series in the x-ray spectrum of an atom corresponding to radiation M-radiation caused by the transition of an electron to the M-shell.

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Etymology

Origin of M-line

First recorded in 1920–25

Example Sentences

Pi is then released, causing myosin to form a stronger attachment to the actin, after which the myosin head moves toward the M-line, pulling the actin along with it.

From Textbooks • Jun. 19, 2013

Thin filaments, anchored at their ends by the Z-discs, do not extend completely into the central region that only contains thick filaments, anchored at their bases at a spot called the M-line.

From Textbooks • Jun. 19, 2013

As actin is pulled, the filaments move approximately 10 nm toward the M-line.

From Textbooks • Jun. 19, 2013