形容词

1. (数字)90
Ninety is the number
90.

2. 九十多;九十几
When you talk about the nineties, you are referring to numbers between 90 and
99. For example, if you are in your nineties, you are aged between 90 and
99. If the temperature is in the nineties, the temperature is between 90 and 99 degrees.

3. 九十年代(指1990年至1999年)
The nineties is the decade between 1990 and
1999.

1. the cardinal number that is the product of ten and nine

Synonym: 90XC