The blank white area near the edges of every page in a Word document is known as a margin.

Explanation:
Margins in a Word document refer to the blank space that surrounds the content on each page. They are important for several reasons, including readability, aesthetics, and practicality.

1. Definition of a Margin:
- A margin is the empty space between the edge of the page and the content within it.
- It provides a visual frame for the text, making it easier to read and comprehend.
- Margins also serve as a buffer zone, preventing the text from getting cut off or too close to the edge of the page.

2. Purpose of Margins:
- Readability: Margins help improve the readability of a document by providing space for the eyes to rest. They create a clear separation between the content and the edge of the page, reducing visual clutter.
- Aesthetics: Margins contribute to the overall visual appeal of a document. They give the document a neat and organized appearance, making it more professional and presentable.
- Practicality: Margins provide space for annotations, notes, or corrections to be made by hand. They also serve as a reference point for binding or hole-punching the document.

3. Adjusting Margins:
- Word allows users to customize the margins according to their preferences.
- By default, Word sets equal margins on all sides of the page, usually around 1 inch (2.54 cm).
- Users can change the margins by going to the "Page Layout" tab and selecting "Margins." From there, they can choose predefined margin settings or set custom margins.

4. Margins vs. Gutters:
- While margins refer to the blank space around the edges of a page, gutters are similar but specifically refer to the space between facing pages in a double-sided document.
- Gutters are used to accommodate the binding or fold in the middle of the document, ensuring that no text or content is lost.

In conclusion, the blank white area near the edges of every page in a Word document is known as a margin. Margins are essential for readability, aesthetics, and practicality, providing a clear separation between the content and the edge of the page.