ALL meanings of that is
that is
T t - adverb that is (used with adjectives and adverbs of quantity or extent) to the extent or degree indicated: that much; The fish was that big. 1
- adverb that is to a great extent or degree; very: It's not that important. 1
- adverb that is Dialect. (used to modify an adjective or another adverb) to such an extent: He was that weak he could hardly stand. 1
- idioms that is at that, in spite of something; nevertheless: Although perhaps too elaborate, it seemed like a good plan at that. in addition; besides: It was a long wait, and an exasperating one at that. 1
- idioms that is that is, (by way of explanation, clarification, or an example); more accurately: I read the book, that is, I read most of it. I believe his account of the story, that is to say, I have no reason to doubt it. Also, that is to say. 1
- idioms that is that's that, Informal. there is no more to be said or done; that is finished: I'm not going, and that's that! 1
- idioms that is that way, Informal. in love or very fond of (usually followed by about or for): The star and the director are that way. I'm that way about coffee. 1
- idioms that is with that, following that; thereupon: With that, he turned on his heel and fled. 1
- adverb that is i.e., in other words 1
- noun that is to be precise 0
- noun that is in other words 0
- noun that is for example 0
- noun that is to be specific 0