Short for tertian ague or fever.

Medicine. A fever that recurs (by inclusive reckoning) every fourth day (i.e. at intervals of approximately seventy-two hours); a quartan fever; (a…

Medicine. A quotidian fever; quotidian malaria. Now historical and rare.

An ephemeral fever.

= quartan, n. 1.

A fever that lasts no longer than a day, or which comes on during the day. Cf. ephemera, n.1, ephemeral, adj. 1a.

A nonan fever.

A fever that recurs (by inclusive reckoning) every fifth day. Now historical and rare.

Medicine. A fever that recurs at intervals of seven days (by inclusive reckoning); = septan, n. Cf. septimane, adj. 1.

A fever that recurs (by inclusive reckoning) every sixth day (i.e. on the first and sixth days of a six-day period).

Semitertian fever; an instance of this.

a quartan ague in which the paroxysms occur in sets of three.

Short for diary fever: see diary, adj. 1. Obsolete.

A septan fever. Cf. septimane, n. 2.

tertian ague.

A quartan fever. rare.

A subintrant fever or attack of another disease. Now rare.

Pathology. An intermittent fever. Also figurative.

Medicine. A fever recurring every eighth day (by inclusive reckoning every ninth day). Cf. nonan, n. Obsolete. rare.

any of various fevers of infectious origin that typically have a duration of seven days; spec. certain forms of borreliosis, dengue, and…

A fever that recurs every seventh day (by inclusive reckoning every eighth day).

third-day ague: tertian ague.

an intermittent fever, an ague.

cf. triple quartan n.

triplicate quartan (ague) = triple, adj. adv.

a remitting quartan fever.