What does reconstitute mean?
Reconstitute means to put something back together so that it regains its original form, composition, or function. The verb is especially common in scientific and technical writing: laboratories may reconstitute a protein from purified components, and a vaccine may be described as a reconstituted preparation. More generally, it can refer to restoring an organization, structure, or condition that had been dismantled or dispersed. Although it often overlaps with rebuild and reassemble, reconstitute carries the more specific implication of recovering an earlier state. The word is formal rather than conversational, but it is useful when precision matters because it distinguishes restoration from entirely new creation.
verbTo restore something to its original form, structure, or composition, especially by assembling its parts again. In scientific and technical contexts, it can also mean to rebuild a substance or biological system from its components.
- To restore something to its original form, structure, or composition.
- To assemble components again so that a substance, organism, or system is restored.
"The researchers reconstituted the original compound from the separately purified components."
"The laboratory successfully reconstituted the protein from its constituent parts."
"The body gradually reconstitutes its strength after the illness."
Reconstitute is to a substance or structure what reset is to a machine: it puts the parts back into a working whole.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does reconstitute come from?
Reconstitute was formed in the 19th century from the prefix re-, meaning “again,” and constitute. Constitute comes through Old French from Latin constituere, meaning “set up,” “establish,” or “form.” The same Latin root produced constituent, constitution, and institution, all of which concern the parts of a whole or the act of establishing it.
Related word forms
How reconstitute is actually used
The word is formal and especially common in scientific, technical, and academic contexts. It normally implies restoring an earlier or original state rather than merely constructing something new.
Easily confused with reconstitute
Constitute means to form or make up a whole, whereas reconstitute means to restore an existing whole by assembling its components again.