ballooning - definition and synonyms

noun [uncountable] 

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/bəˈluːnɪŋ/
  1.   From our crowdsourced Open Dictionary
    2
    when spiders move to a new area by sending out silk threads allowing them to be carried on air currents

    It's unclear what spurs these spiders take to the skies in what are called mass ballooning events.

    Submitted from United Kingdom on 27/05/2015

derived word

balloonist

noun [countable]
singularballoonist
pluralballoonists