The definition of precipitation is any form of water - liquid or solid - falling from the sky.

This includes rain, sleet, snow, hail and drizzle plus a few less common occurrences, which you can learn more about in this video.

Diamond Dust
Daniel Neumann - https://www.youtube.com/watch?v=0icqiFbgIo8

Virga
NWSRiverton - https://www.youtube.com/watch?v=FC3gJ4Kob8g

Freezing rain
Deep Dive - https://www.youtube.com/watch?v=GV4t7PgMnXM

Squall
Robert Neff - https://www.youtube.com/watch?v=PI-t-Z8OCDQ
Glen Martin Photography - https://www.youtube.com/watch?v=POn1YVXXNvQ

Lake effect snow
WeatherNation - https://youtu.be/-LuKZ9kqRgs
Marquix HD - https://www.youtube.com/watch?v=ZoLq-YRRb2k