(mathematics, of a number) Indicating position in a sequence. / (taxonomy) Pertaining to a taxon at the rank of order. / (nautical) Intercardinal.

An ordinal number such as first, second and third. / 2005, F. M. Wheelock, Wheelock’s Latin, 6th edition, revised, page 97:

plural of ordinal

In an ordinal manner.

The state or condition of being ordinal. / A number indicating the position of something in a series or order.

plural of ordinality

The state or quality of being ordinal.

(geometry) The second of the two terms by which a point is referred to, in a system of fixed rectilinear coordinate (Cartesian coordinate) axes.

(transitive, uncommon) to ordain a priest, or consecrate a bishop / (transitive) to align a series of objects

arranged regularly in rows; orderly; disposed or arranged in an orderly or regular fashion.