noun. The act or process of replacing or of being replaced; substitution.

noun. One that replaces, especially a person assigned to a vacant military position.

noun. The act of returning each item that has been selected in a subset from a group before making another selection.

noun. The act of replacing.

noun. In crystallography, the removal of an edge or angle by one plane or more.

noun. The act of replacing.

noun. The removal of an edge or an angle by one or more planes.

noun. A person or thing that takes the place of another; a substitute.

noun. The act of replacing something.

noun. an event in which one thing is substituted for another

noun. a person who follows next in order

noun. filling again by supplying what has been used up

noun. a person or thing that takes or can take the place of another

noun. someone who takes the place of another person

noun. the act of furnishing an equivalent person or thing in the place of another

"To accommodate multi-widgets (e.g. Text and RSS) you can also pass a replacement value with the name: array ($name_as_sprintf_pattern, $textdomain, $replacement)."

spare part  wave of replacement  

overreplacement  

backup  backup man  compeer  equal  fill-in  

basement  debasement  displacement  emplacement  placement  

access  adjustment  alternative  backup  deployment  

agency  agent  alternate  alternative  analogy