Other forms: reassembled, reassembling, reassembles
To reassemble is to put something back together. Reassemble the engine, reassembled in order, reassemble the parts.
It also means to gather again, of people — the committee reassembles in September. Taking a thing apart is usually easier than putting it back, which is why photographing each step is standard advice. Note the re- meaning again, and assemble beneath it.
1verbreassembleTo put something back together.
“After the move, it took us all weekend to reassemble the beds and wardrobes.”
2verbgatherTo gather together again.
“After lunch, the tour group reassembled at the entrance of the museum.”
reassemble is a putting back together.
Proto-Indo-European
*sem-
Medieval Latin
assimulō
Old French
assembler
Middle English
assemblen
English
assemble
English, today
reassemble
Built from
From re- + assemble. assemble comes from Middle English assemblen, from Old French assembler, from Medieval Latin assimulō. From Middle English assemblen, from Old French assembler (“to assemble”), from Medieval Latin assimulo (“to bring together”), from ad- + simulō, from similis (“like, similar”), ultimately from Proto-Indo-European sem- (“together, one”). a doublet of assimilate.
Etymology from Wiktionary, CC BY-SA