Source : Webster's Revised Unabridged Dictionary (1913)

Quotidian \Quo*tid"i*an\, n.
   Anything returning daily; especially (Med.), an intermittent
   fever or ague which returns every day. --Milton.

Quotidian \Quo*tid"i*an\, a. [OE. cotidian, L. quotidianus, fr.
   quotidie daily; quotus how many + dies day: cf. OF. cotidien,
   F. quotidien. See {Quota}, {Deity}.]
   Occurring or returning daily; as, a quotidian fever.

Source : WordNet®

quotidian
     adj : found in the ordinary course of events; "a placid everyday
           scene"; "it was a routine day"; "there's nothing quite
           like a real...train conductor to add color to a
           quotidian commute"- Anita Diamant [syn: {everyday}, {mundane},
            {routine}, {unremarkable}, {workaday}]