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)

• communicants
• communicate
• communicated
• communicates
• communicating
• communicating door
• communicating doors
• communication
• communication cord
• communication cords
• communications
• communications satellite
• communications satellites
• communications theories
• communications theory
• communication theories
• communication theory
• communicative
• communicatively
• communicativeness
• communicator
• communicators
• communicatory
• communi consensu
• communing