1. a mathematical rule or relationship expressed in symbols
2. a recipe or set of instructions for making something
3. a liquid food for feeding babies

Examples

• The formula for the area of a circle is πr².
• She memorized the quadratic formula for the math test.
• The scientist developed a new formula for the medicine.
• The baby drinks formula from a bottle.
• They followed the same formula for success that worked before.
• There’s no magic formula for happiness.
• The coach used a winning formula to train the team.