iron scale
noun
A coating of ferric oxide which forms on iron and steel during hot working and can be separated as thin flakes; mill scale.
Origin
Early 17th century; earliest use found in Henry Peacham (b. 1578), writer and illustrator.
- Third Programme
- third rail
- third-rate
- third-rater
- third reading
- Third Reich
- Third Republic
- third sector
- third time lucky (or third time is the charm)
- third ventricle
- third wave
- third way
- Third World
- thirst
- thirstful
- thirstily
- thirstiness
- thirstland
- thirst-making
- thirst-provoking
- thirst quencher
- thirst-quenching
- thirsty
- thirteen
- Thirteen Colonies