equation

equation /ɪˈkweɪʒən/ noun
plural equations
equation
/ɪˈkweɪʒən/
noun
plural equations
Britannica Dictionary definition of EQUATION
1 
[count] mathematics : a statement that two expressions are equal (such as 8 + 3 = 11 or 2x – 3 = 7)
2 
[count] : a complicated situation or issue — usually singular
3 
[noncount] : the act of regarding two things as the same : the act of equating things