substitution
Prononciation : [sʌbstɪˈtjuːʃən]
Contexte : « education »
(noun) substitution in education means using a different person or thing instead of the usual one. For example, if a teacher is absent, another teacher might come in to teach the class.
Exemple
The school arranged for a substitution when the regular teacher was sick.
Exemple
There can be no substitution for the regular teacher when it comes to important lessons.
Exemple
Who will be the substitution for the teacher tomorrow?
Contexte : « sports »
(noun) in sports, substitution means changing one player for another during a game. It’s like when a coach takes a tired player out and puts another one in to keep the team strong.
Exemple
The coach made a smart substitution that allowed the team to win the game.
Exemple
The team lost because they made a bad substitution at a crucial moment.
Exemple
When will the coach make the next substitution?
Contexte : « cooking »
(noun) substitution in cooking is when you replace one ingredient with another. For example, if you don’t have butter, you might use oil instead.
Exemple
For this recipe, you can use applesauce as a substitution for oil.
Exemple
Using salt as a substitution for sugar would not work well in this cake.
Exemple
What is the best substitution for eggs if I am allergic?
Contexte : « mathematics »
(noun) in mathematics, substitution means replacing a variable with a number or another expression to solve a problem. It’s like putting in the right number to see what happens.
Exemple
The student used substitution to find the value of x in the equation.
Exemple
She couldn't solve the problem because she forgot the substitution step.
Exemple
How does substitution help us solve this math problem?