"ordinal" - key terms from Wikipedia

any ordinal
each ordinal
every ordinal
given ordinal
infinite ordinal
initial ordinal
limit ordinal
nonzero ordinal
ordinal
ordinal	arithmetic
ordinal	date
ordinal	direction
ordinal	directions
ordinal	less than
ordinal	level
ordinal	measurement
ordinal	number
ordinal	numbers
ordinal	numerals
ordinal	ranking
ordinal	scale
ordinal	utility
smallest ordinal
smallest uncountable ordinal