The outer or topmost boundary of an object.

किसी वस्तु की बाहरी या सबसे ऊपरी सीमा।

English Usage: The surface of the water was calm and reflective.

Hindi Usage: पानी की सतह शांत और चिंतनशील थी।

Relating to a surface or area that is situated towards the front or outer side of an organism.