ˈmed. ə lˌīd, -et ə l- transitive verb
( -ed/-ing/-s )
Etymology: obsolete metallide , noun, a binary compound of metals, from metall- + -ide (I)
: to diffuse (atoms of a metal or metalloid) into the surface of a metal by electrolysis in order to impart a desired surface property (as hardness) to the bulk metal