abrade

1. To wear away by mechanical action.

2. To scrape away the surface layer from a part.

Origin

[L. ab-rado, pp. –rasus, to scrape off]


A bands

the dark-staining anisotropic cross striations in the myofibrils of muscle fibers, comprising regions of overlapping thick (myosin) and thin (actin) filaments. Syn: A disks, anisotropic disks, Q bands(1), Q disks.