Verb
1. keep constant through physical or chemical reactions or evolutionary change;
"Energy is conserved in this process"2. keep in safety and protect from harm, decay, loss, or destruction;
"We preserve these archeological findings""The old lady could not keep up the building""children must be taught to conserve our national heritage""The museum curator conserved the ancient manuscripts"3. use cautiously and frugally;
"I try to economize my spare time""conserve your energy for the ascent to the summit"4. preserve with sugar;
"Mom always conserved the strawberries we grew in the backyard"