Definition of gassiness in US English:

gassiness

noun

  • See gassy

    • ‘To reduce sodium, gassiness and that canned taste, pour off the canning liquid, rinse the beans in cold water, then drain.’
    • ‘It was, in fact, a word for symptoms that included constipation, abdominal fullness, gassiness, and/or nausea, which could be accompanied by fever.’