Meaning of the word subzero in English

What does subzero mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

subzero

US /ˈsʌbˌzɪə.roʊ/
UK /ˈsʌbˌzɪə.rəʊ/

Adjective

below zero degrees (especially Celsius)

Example:
The temperature dropped to subzero overnight.
We had to wear extra layers in the subzero conditions.