ordinal

definition: being or denoting a numerical order in a series
example: ordinal numbers
speech part: adjective
synonyms:
definition: of or relating to a taxonomic order
example: family and ordinal names of animals and plants
speech part: adjective
synonyms:
definition: the number designating place in an ordered sequence
example:
speech part: noun
synonyms: ordinal number no.

How ordinal is being used?