1.  replacement(n = noun.act) replacing - the act of furnishing an equivalent person or thing in the place of another; "replacing the star will not be easy"
is a kind of commutation, exchange, substitution
has particulars: novation, pitching change, supersedure, supersession, displacement, supplanting
Derived forms verb replace₁, verb replace₄, verb replace₂

2.  replacement(n = noun.person) alternate, surrogate - someone who takes the place of another person;
is a kind of backup, backup man, fill-in, relief, reliever, stand-in, substitute
Derived forms verb replace₁, verb replace₂

3.  replacement(n = noun.event) permutation, substitution, switch, transposition - an event in which one thing is substituted for another; "the replacement of lost blood by a transfusion of donor blood"
is a kind of fluctuation, variation
Derived form verb replace₁

4.  replacement(n = noun.cognition) substitute - a person or thing that takes or can take the place of another;
is a kind of equivalent
has particulars: ersatz, successor, succedaneum
Derived forms verb replace₁, verb replace₂

5.  replacement(n = noun.process) refilling, renewal, replenishment - filling again by supplying what has been used up;
is a kind of filling

6.  replacement(n = noun.person) successor - a person who follows next in order; "he was President Lincoln's successor"
is a kind of compeer, equal, match, peer

1.  The act of replacing. [1913 Webster]

2.  The removal of an edge or an angle by one or more planes. [1913 Webster]

replacement, n.
1 the act or an instance of replacing or being replaced.
2 a person or thing that takes the place of another.

N  restoration, restoral, reinstatement, replacement, rehabilitation, reestablishment, reconstitution, reconstruction, reproduction, renovation, renewal, revival, revivessence, reviviscence, refreshment, resuscitation, reanimation, revivification, reviction, Phenix, reorganization, renaissance, second youth, rejuvenescence, new birth, regeneration, regeneracy, regenerateness, palingenesis, reconversion, redress, retrieval, reclamation, recovery, convalescence, resumption, resumption, sanativeness, recurrence, rechauffe, rifacimento, cure, recure, sanation, healing, redintegration, rectification, instauration, repair, reparation, remanufacture, recruiting, cicatrization, disinfection, tinkering, reaction, redemption, restitution, relief, tinker, cobbler, vis medicatrix, curableness, restored, redivivus, convalescent, in a fair way, none the worse, rejuvenated, restoring, restorative, recuperative, sanative, reparative, sanatory, reparatory, curative, remedial, restorable, recoverable, sanable, remediable, retrievable, curable, in statu quo, as you were, phr, revenons a nos moutons, medecin, gueris-toi toi- meme, vestigia nulla retrorsum.

N  substitution, commutation, supplanting, metaphor, metonymy, substitute, ersatz, makeshift, temporary expedient, replacement, succedaneum, shift, pis aller, stopgap, jury rigging, jury mast, locum tenens, warming pan, dummy, scapegoat, double, changeling, quid pro quo, alternative, representative, palimpsest, price, purchase money, consideration, equivalent, substituted, ersatz, phony, vicarious, subdititious, instead, in place of, in lieu of, in the stead of, in the room of, faute de mieux.

double replacement reaction, hormone replacement therapy, replacement cost