Definition of rust

Scrabble & Words with friends points

• rust is a valid Scrabble US word with a point value of 4
• rust is a valid Scrabble UK word with a point value of 4
• rust is a valid Words with friends word with a point value of 5

Definition of rust

• the formation of reddish-brown ferric oxides on iron by low-temperature oxidation in the presence of water (noun)

  Synonyms

  1. rusting
• of the brown color of rust (adjective)

  Synonyms

  1. rust-brown
  2. rusty
• any of various fungi causing rust disease in plants (noun)

  Synonyms

  1. rust fungus
• become destroyed by water, air, or a corrosive such as an acid (verb)

  Examples

  1. The pipes rusted

  Synonyms

  1. corrode
• cause to deteriorate due to the action of water, air, or an acid (verb)

  Examples

  1. The steady dripping of water rusted the metal stopper in the sink

  Synonyms

  1. corrode
  2. eat
• a plant disease that produces a reddish-brown discoloration of leaves and stems; caused by various rust fungi (noun)
• a red or brown oxide coating on iron or steel caused by the action of oxygen and moisture (noun)
• become coated with oxide (verb)

See definition of rust in Merriam Webster