Citations:quotidian

Adjective: (medicine) Recurring every twenty-four hours

 * 1898, Patrick Manson, Tropical Diseases, p. 104:
 * Quotidian periodicity we find in greater or less degree in nearly all fevers, particularly in fevers associated with suppuration.
 * 1941, American Journal of Tropical Medicine, vol. XXI:
 * I regret that the effect of these statements is a denial of the observation of initial quotidian paroxysms following artificial inoculation.

Adjective: Happening every day

 * 2000, Marcel Berline, The Guardian, 10 Jul 2000:
 * I know that the government's daily idea to solve the country's law and order problem is not meant to be taken too seriously, but every now and again I am moved to raise an eyebrow at the quotidian suggestion.

Adjective: commonplace

 * 2002, Russ McDonald, in McEachern (Ed.), The Cambridge Companion to Shakespearean Tragedy, p. 28:
 * Tragedy demanded verse, not the quotidian prose of comedy, and verse usually supplied some form of end rhyme.
 * 2010, Steven Heller & Eddie S Glaude, Becoming a Graphic Designer:
 * Grids are used for such quotidian items as stationery, business cards, mailing labels, hang tags, instruction manuals, etc.

Noun: A fever which recurs every day

 * 1623, William Shakespeare, As You Like It:
 * If I could meet that Fancie-monger, I would giue him some good counsel, for he seemes to haue the Quotidian of Loue vpon him.
 * 1671, Robert Boyle, Usefulness of Experimental Natural Philosophy, Part II:
 * I myself was, about two years since, strangely cured of a violent quotidian, which all the wonted method of physick had not so much abated, by applying to my wrists a mixture of two handfuls of bay-salt, two handfuls of the freshest English hops, and a quarter of a pound of blue currants [...].

Noun: Commonplace or mundane things regarded as a class.

 * 2005, Lucy Mangan, The Guardian, 21 Sep 2005:
 * More than opposable thumbs and the invention of the flinthead axe, it was our ability to transcend the quotidian by weaving tales of awe and wonder that set us apart from the beasts.