🔢 Roman numeral 90 9️⃣ Ninety (90)

XC

6.6

A symbol in Roman numerals that means ninety

numeral

: XC

The Roman numeral XC signifies the number ninety.

Examples

In ancient Rome, the number ninety was written as XC.
He scored XC points in the game, which is a record.
And then what we're going to do is we're going to increase the value of XC as much as possible.
To write it like that, set up HX equals one over XC of Zeta.

Surface Forms

XC cardinal word

90 cardinal digit

90th ordinal digit

Morphology

XC = X + C (opaque) = X + C

The symbol 'XC' is a Roman numeral using subtractive notation (X before C = 100 − 10 = 90), not a productive English morphological combination, so knowing the letter words does not let a learner derive the numeric value without knowledge of Roman numerals.

Etymology

XC is the Roman numeral made by placing X ('10') before C ('100'), which shows '100 minus 10', so XC equals '90'.