conserve

B2 · Upper Intermediate

v. to use as little water, energy, or money as possible so you do not waste it.

v. to use a resource sparingly to prevent waste or depletion.

“You should turn off the lights to conserve energy when you leave.”

“During the drought, residents were instructed to conserve water by limiting outdoor irrigation to once per week.”

C1 · Advanced Science Technical

v. in science, when the total amount of something stays the same during a change.

v. to remain constant in quantity or quality during a physical or chemical process.

“In this reaction, the total mass is conserved even if the shape changes.”

“According to the law of physics, energy is always conserved within a closed system, though it may change form.”

B2 · Upper Intermediate Countable noun Cooking

n. a sweet food made by cooking fruit with sugar, often containing large pieces of fruit.

n. a jam-like preparation of fruit cooked in sugar, typically characterized by the inclusion of whole or large pieces of fruit.

“She served warm scones with a dollop of strawberry conserve.”

“The artisanal bakery specializes in apricot conserve, using traditional methods to ensure the fruit retains its texture and vibrant colour.”