Definition for Circadian:

• of or relating to biological processes occurring at 24- hour intervals; " circadian rhythms"

Synonyms for Circadian:

• adj.

  •daily (adjective)
  • cyclic,
  • day by day,
  • most often,
  • common,
  • from day to day,
  • regular,
  • day-to-day,
  • commonplace,
  • routine,
  • often,
  • per diem,
  • everyday,
  • once daily,
  • once a day,
  • constantly,
  • day after day,
  • regularly,
  • ordinary,
  • periodic,
  • quotidian.
  •pert (adjective)
  • circadian.

• Other synonyms:

  •
  • bimonthly,
  • triennial,
  • hourly,
  • monthly,
  • annually,
  • half-hourly,
  • semiweekly.
  •
  • biennial.
  •
  • alternate.

Antonyms for Circadian:

• adj.

  • daily
    extraordinary, nightly, rare, variable, uncommon, infrequent, irregular, different, nocturnal, abnormal, at night, unusual.