in‧di‧ca‧tion W3 [uncountable and countable]
Dark green leaves are a good indication of healthy roots.
He gave no indication of his own feelings at all.
Could you give me some indication as to when I am likely to receive a reply?
Taking a career history along with you will be a clear indication that you are well organized.
Indications are that the situation hasn't improved much.
There is every indication (=there are very clear signs) that it is true.