“a vacuum”

The following 2 entries include the term a vacuum.

cause/create/leave a vacuum

idiom

: to leave an empty space : to create a situation when an important person or thing has gone and has not been replaced

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in a vacuum

idiom

: separated from outside events or influences

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  • any of a genus helianthus especially h annuus of new world composite plants with large yellow rayed flower heads bearing edible seeds that yield an edible oil
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