four-hundredth
- s the ordinal number of four hundred in counting order
- Intel's space-suited workers etch more than 7 million, in lines one four-hundredth the thickness of a human hair, on each of its thumbnail-size Pentium II chips, which sell for .
- The DC shock may run as high as 7,000 volts, but the current is applied for only one four-hundredth of a second.