ferrichrome

noun2

1. •
   A cyclic hexapeptide siderophore produced by some fungi.
2. •
   [before a noun] An audio cassette tape formulation having a five-micron ferric base coated with one micron of chromium dioxide pigment.

   • A cassette containing the new ferrichrome tape came with the unit, and we used this as well as a standard cassette (Maxell) […] — 1975