Safari App Icon Disappeared. The apps that this can happen to include the app store app, the safari web browser, the itunes store app, camera, facetime, and many others. Swipe until you see safari.
Try to move the screens left and right or front and back in order to check for the safari icon. Its not in the extensions part of safari, and for the life of me googling just keeps telling me to install the lastpass extension which i have done! [back to table of contents]
Next, on the dock, press down shift+option keys together and the click on safari icon on the dock.
Try searching for safari in the app store. Type /library/receipts/ and click go. It could have been moved or deleted. If you cannot locate the applications disc for you mac.