yearlong

/Y IH1 R L AO1 NG/
adjective
  1. 1

    Lasting one year; of a timespan of one year.

  2. 2

    Which lasts throughout every year; which is not seasonal

adverb
  1. 1

    (chiefly farming) Per year.

  2. 2

    Throughout every year; not seasonally

Source: https://en.wiktionary.org/wiki/yearlong