SINCE 1828
interannual
adjective
in·ter·an·nu·al
| \ ˌin-tər-ˈan-yə(-wə)l
, -yü-əl\
, -yü-əl\
variants:
or less commonly inter-annual
Definition of interannual
: occurring between, relating to, or involving two or more years : occurring or observed in different years
interannual changes in weather patterns
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