1. The process of forming metal into sheets by passing it between rolls
   - flatting

1. Make flat or flatter
   "flatten a road"; "flatten your stomach with these exercises" 
2. Become flat or flatter
   "The landscape flattened"
   - flatten out 
3. Lower the pitch of (musical notes)
   - drop

Derived forms: flattenings

Type of: alter, change, change form, change shape, deform, form, modify, shape

Antonym: sharpen

Encyclopedia: Flattening

• internal medicine
• internal organ
• internal representation
• internal respiration
• internal revenue
• internal revenue agent
• Internal Revenue Service
• internal rhyme
• internal secretion
• internal spermatic artery
• internal-combustion engine
• internalisation
• internalise
• internality
• internalization
• internalize
• internally
• internasal suture
• international
• international affairs
• international ampere
• International Association of Lions clubs
• International Atomic Energy Agency
• International Bank for Reconstruction and Development
• international candle