- Being of a specified position in a numbered series: an ordinal rank of seventh.
- Of or relating to a taxonomic order.
From Michael Yon’s blog:
Nobody knows what the future will bring for Iraq. In my opinion, itâ€™s already in a civil war, though many people seem afraid to say it. Actually, the reluctance is more likely ordinal in natureâ€“-no one wants to be the first to say what many know to be true
The American Heritage Dictionary, Fourth Edition