1. the comparative relationship between parts of a whole or between different quantities
2. the size, extent, or dimensions of something
3. the correct or pleasing relationship between the sizes of different parts

Examples

• The recipe calls for equal proportions of flour and sugar.
• The building’s proportions were perfectly balanced and elegant.
• The disaster reached epic proportions.
• She mixed the paint in the right proportions to get the desired color.
• The statue’s proportions were based on classical Greek ideals.
• The problem has grown to alarming proportions.
• The architect carefully considered the proportions of each room.