1) Changeover 2) Deputy 3) Double 4) Exchange 5) Fluctuation 6) Permutation 7) Refill 8) Reserve 9) Standby 10) Substitute 11) Substitution 12) Swap 13) Switch 14) Transposition 15) Understudy 16) Variation 1) Copy 2) Novation 3) Permutation 4) Refilling 5) Replacing 6) Replenishment 7) Restoration 8) Rotation 9) Spare part 10) Sub 11) Substitute 12) Substitution 13) Succedaneum 14) Successor 15) Supersedure 16) Supersession 17) Supplanting 18) Transfer 
see substitute
• (n.) The removal of an edge or an angle by one or more planes. • (n.) The act of replacing.
(from the article `operations research`) Replacement problems involve items that degenerate with use or with the passage of time and those that fail after a certain amount of use or time. ...
(re-plās´ment) substitution; see also replacement therapy. arthroplasty. joint replacement arthroplasty. total hip replacement total hip arthroplasty. total joint replacement total joint arthroplasty.
The dissolving or disintegration of one material followed by precipitation of a new material in its
the process whereby a volume of fluid equal to the volume of steel in tubular and tools withdrawn from the wellbore is returned to the wellbore. 
Re·place'ment (-m e nt) noun 1. The act of replacing. 2. (Crystallog.) The removal of an edge or an angle by one or more planes. 
Type: Term Pronunciation: rē-plās′mĕnt Definitions: 1. Restoration. 2. Substitution.
Replacement refers to the process by which one mineral is replaced by another and the original physical form is often retained.
The practice of removing an existing roof system and replacing it with a new roofing system.
Fossilization process that occurs when an organism is completely decomposed and replaced by mineral.
Fossilization process that occurs when an organism is completely decomposed and replaced by mineral.
[n] - the act of furnishing an equivalent person or thing in the place of another
any chemical process thought to involve essentially simultaneous removal of one mineral and deposition of another in its place. 
replacing noun the act of furnishing an equivalent person or thing in the place of another; `replacing the star will not be easy`
A calf kept and/or raised at the dairy as a future replacement for a cow in the herd. Replacement rate should average between 25%-33% of the herd/year.
the act of furnishing an equivalent person or thing in the place of another