IPA: /ʌnˈsiːn/
KK: /ʌnˈsin/
Something that cannot be seen or is not visible to the eye.
The unseen forces of nature can have a powerful impact on our lives.
Unseen → It is formed from "un-" (meaning not) and "seen" (from Old English "seon", meaning to see). The word "unseen" means not seen or invisible.
Think of 'not' ('un-') and 'to see' ('seon') — that's why unseen means something that is not visible.