Medical Dictionary for Pages

Here are the steps to get the medical spelling dictionary setup for Pages 7.1 (or later).

1. Download as a zip file. The linked site will have a green button that you click once to get the following panel. Choose the Download ZIP option.
   
2. In the 10.13.6 Dock, I have a Downloads alias set up as a fan. You single-click the .zip file, and it will open a Finder window on the resultant folder (hunspell-en-med-glut-workaround-master) in the Downloads folder. It has four UTF-8 text documents in it. The actual dictionary files end in .aff and .dic.
   
3. The en_US.dic file should contain the count of items (line count), directly followed by the individual dictionary items. In this case, the authors violated the document format by placing other informational text between the count (150728), and the first dictionary entry (0/nm). The informational text inside the red rectangle must be removed before the dictionary will function correctly:
   
4. Launch the Terminal application from Dock : Launchpad : Other
   1. The Terminal opens to your home directory. Copy/paste the following commands, and end each with a return:
      1. cd ~/Downloads/hunspell-en-med-glut-workaround-master
      2. sed '2,17d' ./en_US.dic > ~/Library/Spelling/en.US_Medical.dic
      3. cp ./en_US.aff ~/Library/Spelling/en.US_Medical.aff
   2. You have just removed the informational text from the .dic file and copied functional medical dictionary into your local Library/Spelling directory, along with its .aff file.
   3. Quit the Terminal application.
5. Now, onto System Preferences : Keyboard panel : Text tab
   1. Click the Spelling: Automatic by Language selector, and at the very bottom of the menu, click Set Up…
   2. In the English section, you should see an unchecked entry named English (United States, Medical) (Library). Click the check box. If you want, you can press the command-key as you click on this entry, and move it up just below U.S. English. Looks like this, and you can then click Done.
      
   3. On the Keyboard : Text tab, I have Correct spelling automatically checked.
   4. Quit System Preferences
6. Launch Pages 7.1 with a new blank document.
   1. Edit menu : Spelling and Grammar
      1. Sub-menu settings:
         
      2. Now, from this menu select Show Spelling and Grammar item, or just shift+command+: because command+: does not work! The following panel appears:
         
      3. Click on Automatic by Language, and select the item English (United States, Medical)(Library). You must select this for medical mispellings to be flagged as you type, as Automatic by Language does not invoke the medical spelling dictionary.
   2. Medical spelling dictionary configuration is complete.
7. In Pages 7.1, correct medical spelling will not be flagged with these settings, and misspellings will get the red underline treatment. To see the correct spelling, you place the insertion point immediately behind the misspelled text, and a floating selector of possible spellings will appear. Click the proper spelling entry to automatically correct the flagged word:
   
   or, by pressing shift+command+:, you will get the alternate replacement panel, where you select the correct spelling from the alternatives, and then click change: