The cardinal number immediately following ninety-eight and preceding one hundred.

(countable) A traditional British ice cream cone with a flaky chocolate bar inserted, usually made with soft serve.

plural of ninety-nine

The cardinal number occurring after nine thousand nine hundred and ninety-eight and before ten thousand, represented in Arabic numerals as 9,999. Represented in Roman numerals as IXCMXCIX.

A genius depends more on hard work than imagination.

(software engineering) A humorous aphorism stating that the first 90% of the code accounts for the first 90% of the development time, and the remaining 10% of the code accounts for the other 90% of the development time.