nine
- 01 A1 Beginner
num.the number 9, which comes after eight and before ten.
num.the cardinal number between eight and ten.
Simple“There are nine students in the advanced photography class this semester.”
In context“The project was divided into nine distinct phases, each requiring a separate budget approval from the board of directors.”
- 02 A2 Elementary
n.the written symbol or figure 9.
n.the graphic symbol or digit representing the number nine.
Simple“The house number was a large brass nine fixed to the gate.”
In context“The accountant noticed that the nine in the final column had been smudged, making the total difficult to verify.”
- 03 C1 Advanced
n.a way to measure how reliable a computer system is, using the number of nines in a percentage.
n.a statistical unit of proportion used to express high levels of reliability or purity, such as 'five nines' for 99.999%.
Simple“The company promises four nines of reliability for its cloud storage service.”
In context“Achieving five nines of uptime requires significant investment in redundant hardware and automated failover protocols.”
UsageUsually used in the plural to refer to the number of decimal places in a percentage.
- 04 B2 Upper Intermediate
n.a name for a baseball team, because there are nine players on the field.
n.a metonymic reference to a baseball team or its starting lineup.
Simple“The local nine won the championship game in the final inning.”
In context“The manager struggled to assemble a competitive nine after three of his star players were sidelined by injuries.”
- 05 C1 Advanced
Usage nine years · nine months · nine days