This is the 90th most frequent Greek word.
υπό
"Under," "below," or "beneath."
Here, 'υπό' signifies 'under', showing the condition of being controlled.
Η πίεση βρίσκεται υπό έλεγχο.
The pressure is under control.
In this context, 'υπό' conveys the idea of 'subject to' or 'in compliance with'.
Τα έγγραφα αναφέρονται υπό αυστηρούς όρους.
The documents are mentioned under strict terms.
Here, 'υπό' is used metaphorically to mean 'under', in reference to a condition or context.