indentation

Think about pressing your thumb into soft clay. That leaves a small dip or hollow, and that is an indentation. You can also see one in a pillow after someone gets up, in sand after a shoe steps on it, or in a surface after something heavy has pressed into it.

The word is also common in writing and layout. In that case, it means the space left at the beginning of a line, especially at the start of a new paragraph. That extra space helps organize text and makes it easier to read.

An indentation is a hollow, dip, dent, or inward mark in a surface. It usually appears when something presses into another thing. You might notice an indentation in a cushion, a mark in the ground from a boot, or a slight dent in wood where an object rested for a long time. In all of these cases, the idea is the same: the surface is pushed inward instead of staying flat.

The word is also widely used in writing, printing, and digital text. There, an indentation is the blank space at the beginning of a line, usually the first line of a paragraph. It gives the reader a clear visual signal that a new section of thought is starting. In code, indentation is also important because it helps show structure and makes the text easier to follow. In some programming languages, it is not just a style choice but part of the syntax.

So the word can describe either a physical inward mark or a purposeful blank space at the start of a line. The two uses may seem different, but they share the same basic idea: something is set in from the usual edge or surface.