verb , noun
■ verb / kənˈsɜːv; NAmE -ˈsɜːrv/ [ vn ]
1.
to use as little of sth as possible so that it lasts a long time :
Help to conserve energy by insulating your home.
2.
to protect sth and prevent it from being changed or destroyed :
new laws to conserve wildlife in the area
—see also conservation
■ noun
/ ˈkɒnsɜːv; NAmE ˈkɑːnsɜːrv/ [ C , U ] jam containing large or whole pieces of fruit
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WORD ORIGIN
late Middle English : from Old French conserver (verb), conserve (noun), from Latin conservare to preserve, from con- together + servare to keep.