perception by means of the eyes
"After adjusting his glasses, he finally saw the sign on the distant hill."
normal use of the faculty of vision
"I was walking down the street when I saw a cat chasing its tail in an alleyway."
The action of the verb to see; eyesight.
"The new glasses finally restored his seeing after years of poor vision."
In plain English: Seeing is the act of using your eyes to notice things around you.
"The whole point of the trip was the seeing in New York City, where you could spot famous landmarks from every corner."
present participle of see
"Seeing that it started to rain, we decided to cancel our picnic."
In plain English: Seeing is when your eyes catch light from something so you can notice it with your mind.
"I saw a bird flying overhead while I was walking home."
having vision, not blind
"After months of waiting for his transplant, he finally opened his eyes and saw the world clearly again."
Having vision; not blind.
"After recovering from his eye infection, he finally felt like seeing again without needing glasses."
In plain English: Seeing describes something that is visible or can be seen with your eyes.
"The seeing eye dog helped its blind owner cross the busy street safely."
Usage: Use seeing as an adjective only when describing someone who possesses physical sight, such as in the phrase "a seeing eye." Do not use it to describe general awareness or perception, which requires different vocabulary like perceptive or observant.
Inasmuch as; in view of the fact that.
"Seeing that you've been working late every night, I think we should take a break today."
The word seeing is formed by adding the suffix -ing to the verb see. It entered English as a standard way to describe the action or state of perceiving with one's eyes.