(mathematics, rare) A total order.

plural of total ordering relation

plural of partial ordering relation

A Northern Ireland religious and political organisation, loyal to the British crown and with strong anti-Catholicism policies.

(taxonomy) A taxonomic category below suborder and above superfamily.

The business to be done by a body (such as a legislature) on a particular day; an agenda. / The most significant aspect of something; what is necessary or appropriate.

(idiomatic) Out of normal sequence. / (idiomatic) Not functioning properly. / (idiomatic) Inappropriate or unsuitable.

Used other than figuratively or idiomatically: see doctor, -'s, orders. / (Britain, bingo) The number nine.

plural of infraorder

Made for a specific individual, but not always to individual specifications.