Permalloy

[ purm-al-oi, pur-muh-loi ]
/ ˌpɜrmˈæl ɔɪ, ˈpɜr məˌlɔɪ /

Trademark.

a brand name for any of a class of alloys of high magnetic permeability, containing from 30 to 90 percent nickel.

Origin of Permalloy

First recorded in 1920–25; perm(anent) + alloy

British Dictionary definitions for permalloy

permalloy
/ (pɜːmˈælɔɪ) /

noun

any of various alloys containing iron and nickel (45–80 per cent) and sometimes smaller amounts of chromium and molybdenum

Word Origin for permalloy

C20: from perm ( eability) + alloy