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matter of the heart definition, matter of the heart meaning | English dictionary. matter. 2 substance that occupies space and has mass, as distinguished from substance that is mental, spiritual, etc. n the substance or main theme of a book, discussion, debate, etc.
This subclass is indented under the class definition. Subject matter relating to a means for removing blood from a persons body and either returning the same blood, or a constituent thereof, to the body after it has been handled for some purpose, or replacing the drawn blood with new blood or constituent. (1) Note.