1. plural of intercom; electronic communication systems that allow conversation between different rooms or areas of a building

Examples

• The office building has intercoms in every conference room.
• Security guards use intercoms to communicate between floors.
• The school installed new intercoms in all classrooms.
• Nurses can call doctors using the hospital intercoms.
• The apartment building’s intercoms allow visitors to call residents.
• Factory workers rely on intercoms for safety announcements.