conservation

B2 · Upper Intermediate Uncountable noun

n. the act of using less of something, like water or energy, so that it is not wasted.

n. the planned management of a limited resource to prevent exploitation, destruction, or neglect.

“Water conservation becomes very important during the dry summer months.”

“The government introduced new tax incentives to encourage energy conservation in industrial manufacturing plants.”

C1 · Advanced Uncountable noun Technical

n. the professional care and repair of old buildings, art, or historical objects.

n. the professional activity of preserving and restoring cultural heritage, including works of art, architecture, and archaeological finds.

日本語:保存※

“The museum's conservation department spent months cleaning the ancient painting.”

“The conservation of the medieval cathedral involved both structural reinforcement and the delicate cleaning of original stained-glass windows.”

C1 · Advanced Uncountable noun Science Academic · Technical

n. the fact that the total amount of something, like energy, stays the same even when it changes form.

n. the principle that a total value of a physical magnitude remains constant in a system which is isolated from its surroundings.

“According to the law of conservation of energy, energy cannot be created or destroyed.”

“Students must demonstrate a firm grasp of the conservation of momentum before moving on to more complex orbital mechanics.”