interphone
C1technical/formal
Definition
Meaning
A direct voice communication system with handsets or speakers, enabling conversation between people in different rooms or areas of the same building.
An internal telephone system for use within a building, institution, or vehicle; a device for two-way internal communication without using the public telephone network.
Linguistics
Semantic Notes
"Interphone" refers specifically to internal communication devices, differentiating it from "intercom" which can imply a more public broadcasting function. It's a closed-circuit system.
Dialectal Variation
British vs American Usage
Differences
In American English, "intercom" is the dominant, generic term for internal communication systems. "Interphone" is rarely used and sounds technical/dated. In British English, "interphone" is also less common than "intercom" but might be encountered in specific technical or security contexts.
Connotations
UK: Slightly technical, associated with security, building management, or aviation (e.g., cockpit interphone). US: Very technical, archaic, or industry-specific jargon.
Frequency
"Interphone" is low-frequency in both varieties. In everyday conversation, "intercom" is used 99% of the time. "Interphone" appears in technical manuals, aviation, or security specifications.
Vocabulary
Collocations
Grammar
Valency Patterns
The [SECURITY GUARD] used the [BUILDING] interphone to contact [THE RECEPTIONIST].Communication via the [AIRCRAFT] interphone is essential for [CREW COORDINATION].Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “On the interphone (communicating via the internal system)”
Usage
Context Usage
Business
Rare. Might be used in facilities management: 'Please use the interphone to call up to the secure floor.'
Academic
Extremely rare outside of technical descriptions in engineering or design papers.
Everyday
Virtually never used. 'Intercom' is the everyday word.
Technical
Primary domain. Used in aviation (cockpit interphone system), security system design, and architectural specifications for buildings.
Examples
By Part of Speech
verb
British English
- The manager asked him to interphone the control room.
- We'll need to interphone the ground crew before departure.
American English
- The technician interphoned the main office from the basement. (Very rare)
adverb
British English
- They communicated interphone throughout the operation. (Rare/Non-standard)
American English
- (No standard adverbial use in American English)
adjective
British English
- The interphone connection was faulty.
- They installed a new interphone system.
American English
- The interphone circuitry needs checking. (Technical)
Examples
By CEFR Level
- (Not typically taught at A2) The receptionist spoke to me on the phone in the lobby.
- The security guard used the interphone to call the apartment.
- Before opening the secure door, the officer verified my identity via the interphone system.
- The aircraft's interphone allows the flight crew to communicate independently of the air traffic control frequency.
Learning
Memory Aids
Mnemonic
Think INTERnal telePHONE. It's for communication *inside* a single entity like a plane or building.
Conceptual Metaphor
A PRIVATE SHORTCUT FOR VOICE (as opposed to the public, networked "highway" of a regular phone).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating "interphone" as "интерфон". Russian speakers should use "внутренняя телефонная связь", "переговорное устройство", or the common loanword "интерком".
Common Mistakes
- Using 'interphone' in casual conversation (sounds unnatural).
- Confusing it with 'telephone' or 'smartphone'.
- Spelling it as 'interfone'.
Practice
Quiz
In which context is the term 'interphone' MOST appropriately used?
FAQ
Frequently Asked Questions
An 'intercom' (intercommunication system) is a broader term that can include one-way paging or broadcasting. An 'interphone' specifically implies a two-way, point-to-point voice communication device, like an internal telephone. In practice, 'intercom' is the common umbrella term.
No, it is a low-frequency, technical term. The vastly more common and recommended word for learners is 'intercom'.
Rarely and only in very technical contexts (e.g., "Interphone the control tower"). It is not standard in general English. Use "call on the intercom" or "use the intercom" instead.
Primarily in technical manuals for buildings, aviation (cockpit procedures), security system documentation, or in some European contexts where the term is more common than in the US/UK.