intercalary
1. [ adjective ] added or having an addition to make the calendar year correspond to the solar year
Examples:

"Feb. 29 is an intercalary day" "leap year is an intercalary year"

Related terms: added
Similar spelling:   intercalate
  intercellular
  intercalation
  interracially
  intermural
  interval
  interracial
  interfacial
  internal
  interplanetary
  interlinear
  interlard
  internal_ear
  intermarry
  interstellar
  intermediary
  interlayer
  in_the_raw
  internally
  interplay
  inter_alia
  intertidal
  interpersonal
  interlocutory
  interstratify
  internal_rhyme
  intercourse
  intercostal
  interchurch
  intercessor
  interceptor
  interlobular
  interloper
  in_theory
  intersexual
  intertribal
  intersectant
  intercom
  interior
  interpol
  interpellate
  intercrossed
  intercede
  intercept
  interlock
  interface
  interfere
  intergalactic
  interject
  interlace
  interleaf
  Interlingua
  interlink
  interlocutor
  interlope
  interlude
  intermolecular
  intersect
  interdict
  intervertebral