that is

that is idiom
Also, that is to say. To explain more clearly, in other words, as in It's on the first floor, that is, at street level, or We're coming next month, that is to say, in November. [Early 1600s] Also see under that's.

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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Related Discussions (2)
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There's a word that I want that is perfect, but, of course, I can't remember it.79 months ago
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