Here's why:
* Short vowel sound: The vowel sound in "razor" is similar to the vowel sound in words like "cat", "bed", and "run". It's a quick and concise sound.
* Long vowel sound: A long vowel sound would be similar to the vowel sound in words like "race", "bake", and "flute". It's a drawn-out and more open sound.
Therefore, the vowel sound in "razor" is considered a short vowel sound.