noun
Meaning 1
The application of a protective coating of phosphate to the surface of metals (usually steels); various types exist; the coating is often black or gray.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable, usually
Examples
- Near-synonym: blackening
Meaning relationships
Synonyms: blackening
Antonyms: none provided
Broader terms: conversion coating, coating, finish, substance, material