diaeresis or dieresis /dī-ērˈi-sis or -erˈ/

1. A mark ( ¨ ) placed over a vowel, esp the second of two adjacent ones to show that it is to be pronounced separately, as in naïf
2. A pause or break where the end of the word coincides with the end of a foot (prosody)

• egesta
• egested
• egesting
• egestion
• egestions
• egestive
• egests
• egg
• egg-and-anchor
• egg-and-dart
• egg-and-spoon race
• egg-and-tongue
• egg apparatus
• egg-apple
• egg-apples
• eggar
• eggars
• egg beater
• egg beaters
• egg-binding
• egg-bird
• egg-birds
• egg-bound
• egg box
• egg-box