1. Being of a specified position in a numbered series: an ordinal rank of seventh.2. Of or relating to a taxonomic order.
NOUN:
1. An ordinal number. 2.Ecclesiasticala. A book of instructions for daily services. b. A book of forms for ordination.
ETYMOLOGY:
Middle English ordinel, orderly, regular, from Late Latin rdinlis, ordinal, from Latin rd, rdin-, order. See ar- in Appendix I. N., sense 2, from Middle English, from Medieval Latin rdinle, from Late Latin, neuter sing. of rdinlis, ordinal.
ôr
dn-
l
rdin
lis, ordinal, from Latin 
