the act of indenting or state of being indented.-a notch or recess, in the margin or border of anything; as, the indentations of a leaf, of the coast, etc.-a recess or sharp depression in any surface.-the act of beginning a line or series of lines at a little distance within the flush line of the column or page, as in the common way of beginning the first line of a paragraph.-the measure of the distance; as, an indentation of one em, or of two ems.