Question

1956,  Arthur C. Clarke,  The City and the Stars, page 37:The entranced spectator was cut off from reality as long as the adventure lasted; it was as if he lived a dream yet believed he was awake.

Accepted Answer

To isolatehttps://en.wiktionary.org/wiki/isolate or removehttps://en.wiktionary.org/wiki/remove from contact.

Sentence	1956, Arthur C. Clarke, The City and the Stars, page 37: The entranced spectator was cut off from reality as long as the adventure lasted; it was as if he lived a dream yet believed he was awake.
Definition	To isolate https://en.wiktionary.org/wiki/isolate or remove https://en.wiktionary.org/wiki/remove from contact.

Arthur C Clarke City Stars Page Entranced Spectator