I band

noun
\ ˈī- How to pronounce I band (audio) \

Medical Definition of I band

: a pale band across a striated muscle fiber that consists of actin, is much less birefringent to polarized light than the A bands, is situated between two A bands, and is bisected by a narrow dark-staining Z line

called also isotropic band

Learn More About I band

Dictionary Entries Near I band

ib

I band

ibandronate

See More Nearby Entries 

Cite this Entry

“I band.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/I%20band. Accessed 5 Dec. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet pasta spelling help
  • Which is the correct spelling?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!