Learn how to say Indentations correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word indentation:
a hollowed, notched, or cut place, as on an edge or on a coastline
a series of hollows, notches, or cuts
the act of indenting or the condition of being indented
Also called: indention, indent. the leaving of space or the amount of space left between a margin and the start of an indented line