If sinus ct says, both sinus are patent, what does the word patent means pls, my symptoms are nasal congestion, dryness, and trouble vid nasal breathin?

Patent = Open: In the context of you sinus ct - patent means that your sinuses are open and unobstructed (thats normal). In regards to your symptoms, you should have a discussion with your ENT doctor regarding why you are having difficulty with nasal breathing and nasal congestion.

Open: Patent means open. So it sounds like you sinuses are clear on the ct scan.