porthole: meaning, definition, pronunciation and examples
C1Technical (nautical, aviation), descriptive (general).
Quick answer
What does “porthole” mean?
A small, usually circular, window in the side of a ship or aircraft.
Audio
Pronunciation
Definition
Meaning and Definition
A small, usually circular, window in the side of a ship or aircraft.
Any small, round window-like opening, sometimes used metaphorically to describe any small, limited viewpoint or opening.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or form. Pronunciation differs slightly.
Connotations
In both varieties, the primary connotation is maritime/nautical.
Frequency
Equally low-frequency in both dialects, used only when the specific object is referenced.
Grammar
How to Use “porthole” in a Sentence
[Subject] + looked through + [the/their/a] porthole.[The/A] porthole + was + [adjective e.g., sealed, open, round].Vocabulary
Collocations
Examples
Examples of “porthole” in a Sentence
verb
British English
- (Extremely rare/poetic) 'They attempted to porthole a viewing aperture in the bulkhead.'
American English
- (Extremely rare/poetic) 'The designer wanted to porthole the fuselage for observational purposes.'
adverb
British English
- (No established adverbial use)
American English
- (No established adverbial use)
adjective
British English
- The cabin had a charming porthole-style window.
- He bought a porthole mirror for the bathroom.
American English
- The bathroom featured a porthole-shaped opening.
- They admired the vintage porthole clock.
Usage
Meaning in Context
Business
Rare. Might appear in yacht brokerage or maritime tourism marketing.
Academic
Used in historical, naval architecture, or marine engineering contexts.
Everyday
Used when specifically describing ships, boats, or nautical-themed décor.
Technical
Standard term in maritime and aviation industries for a side window.
Watch out
Common Mistakes When Using “porthole”
- Using 'porthole' to describe a normal house or car window.
- Misspelling as 'porthold', 'portholee'.
- Pronouncing the 't' as a strong stop; it's often softened or glottalized in fluent speech.
FAQ
Frequently Asked Questions
Traditionally and most commonly, yes. The round shape helps distribute pressure evenly, which is crucial on ships. Some modern vessels or non-nautical uses may feature oval or squared-off 'porthole-style' windows.
No, this would sound unusual or metaphorical. 'Porthole' is specific to vessels (ships, boats, submarines) and aircraft. For a house, use 'window'; for a car, use 'window' or 'side window'.
On a ship, 'porthole' is the specific term for the smaller, usually round, sealed windows along the hull. Larger, often rectangular windows on the superstructure (upper decks) might simply be called 'windows'.
It is a low-frequency word. Most people know it, but they only use it when specifically discussing ships, boats, or in related metaphors. It is not part of daily vocabulary for most.
A small, usually circular, window in the side of a ship or aircraft.
Porthole is usually technical (nautical, aviation), descriptive (general). in register.
Porthole: in British English it is pronounced /ˈpɔːt.həʊl/, and in American English it is pronounced /ˈpɔːrt.hoʊl/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[Rare] 'porthole on the world' – a limited viewpoint or perspective.”
Learning
Memory Aids
Mnemonic
Think: A PORT is where a ship stops, and a HOLE is an opening. A PORTHOLE is the 'hole' (window) in the side of a ship when it's in port or at sea.
Conceptual Metaphor
PORTHOLE AS A LIMITED VIEWPOINT (e.g., 'The documentary was a porthole into a vanished world.')
Practice
Quiz
In which context would the word 'porthole' be LEAST appropriate?