A significant of a whole through its significant part is
Answer Details
The term you are looking for is "synecdoche."
Synecdoche is a figure of speech where a part of something is used to refer to the whole, or the whole is used to refer to a part. For example, saying "hands" to refer to "workers," or "wheels" to refer to a "car." This is a way of describing something by using a smaller or simpler part to represent the larger or more complex whole.