The process of syncytia-forming cell-cell fusion, caused by a virus.
Comment:
Where syncytium formation results in the spread of virus in the host, also consider annotating to the term 'transport of virus in multicellular host ; GO:0046739'.
Synonyms:
exact_synonym:
induction by virus of cell-cell fusion in host; viral-induced cell-cell fusion; viral-induced host cell-cell fusion