Dictionary in MS Excel

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The spell-checking feature in Microsoft Excel uses the language settings of your operating system. If you want to check or change the language settings in Excel, you can do so through the following steps:

1. Open Excel and the workbook you want to check.
2. Select the "Review" tab in the ribbon.
3. Click on "Spelling" in the "Proofing" group.

Excel will then check the spelling based on the language settings of your operating system. If you want to change the language settings, you can do so through the following steps:

1. Go to the "File" tab.
2. Select "Options" at the bottom of the navigation pane.
3. In the Excel Options dialog box, select "Language" on the left.
4. Choose the language you want to use for editing and display.

Keep in mind that these settings affect the spell-checking language, among other things, in the entire Excel application, not just a specific workbook.

If you are asking about using custom dictionaries or specific dictionaries within an Excel workbook, Excel doesn't natively support workbook-specific dictionaries. The spell-checking relies on the language settings configured in Excel options.

If you have specific terminology or words that are not recognized by the standard dictionary, you might need to add those words to the dictionary in your operating system.

Please note that the steps might slightly vary based on the version of Microsoft Excel you are using.