con·serve (kən-sûrv)
v. con·served, con·serv·ing, con·serves v.tr.
1.
a. To protect from loss or harm; preserve: calls to conserve our national heritage in the face of bewildering change.
b. To use carefully or sparingly, avoiding waste: kept the thermostat lower to conserve energy.
[Middle English conserven, from Old French conserver, from Latin cōnservāre : com-, intensive pref.; see COM- + servāre, to preserve; see ser-1 in the Appendix of Indo-European roots.]
con·serva·ble adj.
con·server n.
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