What is third-person limited point of view?

The narrator tells some characters thoughts, such as those of the main character or characters, but never tells the thoughts of other characters.
Limited third person point of view is a literary term, referring to the point or perspective from which a fiction story is told. One characteristic of a fiction story told from the third person point of view is the lack of first person pronouns, such as I or me or we, other than in dialogue. This particular point of view is characterized as limited because the story is told through one character's view or experiences or discoveries, etc., but is not told by that character.

In addition, limited third person point of view is different from omniscience in that information is limited to one character's information. In other words, for fiction stories written in the omniscient point of view, readers know everything about every character, but in limited third person point of view readers know only what the chosen character knows. For example, most mystery stories are in limited third person point of view: readers know only the information known by the character who is trying to solve the mystery.
third person limited means you know what the character is thinking, but they do not use "I." For example, "Clary dismounted her horse and instantly regretted going off on her own."

The "limited" part means you only know what one person is thinking. "Omniscient" means you know what other characters are thinking as well. Neither uses the word "I"