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twice-yearly (not comparable)

  1. Happening twice each year; semi-annual; biannual.
    • 1950, British Ecological Society, The Journal of Animal Ecology, Blackwell Science, page 66,
      While the migrations of many butterflies now appear to be twice-yearly movements away from and back to the same areas, they differ from those of birds in ...
    • 1992, Rigas Doganis, The Airport Business, Routledge, →ISBN, page 101,
      At the twice-yearly IATA timetable co-ordination meetings, airlines from ...
    • 2008, The American Affluence Research Centre website
      Twice-Yearly Surveys of Affluent Americans


twice-yearly (not comparable)

  1. (UK & Commonwealth) Twice each year; semi-yearly; biannually.