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)

• lateral line
• lateral lines
• laterally
• laterals
• lateral shift
• lateral shifts
• lateral thinking
• Lateran
• Lateran Councils
• Lateran Treaty
• laterigrade
• laterisation
• laterisations
• laterite
• laterites
• lateritic
• lateritious
• laterization
• laterizations
• laters
• latescence
• latescences
• latescent
• latest
• latests