equation
nounUK /ɪˈkweɪʒən/
US /ɪˈkweɪʒən/
A math sentence that shows two things are equal.
The equation 2 + 3 = 5 shows that two plus three equals five.
OTHER MEANINGS
2. A complicated situation that involves many connected parts.
Fixing the traffic problem is a tricky equation.
3. The act of treating two things as equal or the same.
There is no equation between money and happiness.
4. A chemical statement showing how substances react together.
Water is made from the chemical equation of hydrogen and oxygen.