noun
Meaning 1
A hinged or sliding door set into a floor or ceiling.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Standard Lemma guide
trapdoor
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
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Received-Pronunciation: trăpdô
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Received-Pronunciation: /ˈtræpdɔː/
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General-American: trăpdôr
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General-American: /ˈtræpdoɹ/
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Southern-England: Recorded audio is listed in the source snapshot.
noun
Meaning 2
Such a trap set into the floor of a stage to allow fast exits and entrances.
Definition source: English Wiktionary via Wiktextract
Topics: entertainment, lifestyle, theater
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
noun
Meaning 3
A secret method of obtaining access to a program or online system; a backdoor.
Definition source: English Wiktionary via Wiktextract
Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
noun
Meaning 4
The special information that permits the inverse of a trapdoor function to be easily computed.
Definition source: English Wiktionary via Wiktextract
Topics: computing, cryptography, engineering, mathematics, natural-sciences, physical-sciences, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
noun
Meaning 5
A door in a level for regulating the ventilating current; a weather door.
Definition source: English Wiktionary via Wiktextract
Topics: business, mining
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
verb
Meaning 6
To subvert (a cryptographic scheme) by means of a secret parameter that makes the trapdoor function easy to compute.
Definition source: English Wiktionary via Wiktextract
Usage: transitive
Topics: computing, cryptography, engineering, mathematics, natural-sciences, physical-sciences, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
verb
Meaning 7
To form a trapdoor deformity.
Definition source: English Wiktionary via Wiktextract
Usage: intransitive
Topics: medicine, sciences, surgery
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
History
Etymology
From trap + door.
Across languages
Translations
57 source translations are retained for this English entry.
- Afrikaans: valdeur — door set into floor or ceiling
- Asturian: trapiella — door set into floor or ceiling
- Asturian: trapia — door set into floor or ceiling
- Bulgarian: люк (ljuk) — door set into floor or ceiling
- Bulgarian: капак на пода (kapak na poda) — door set into floor or ceiling
- Catalan: trapa — door set into floor or ceiling
- Catalan: escotilla — door set into floor or ceiling
- Chinese Mandarin: 活板門 /活板门 (huóbǎnmén) — door set into floor or ceiling
- Danish: lem — door set into floor or ceiling
- Danish: luge — door set into floor or ceiling
- Dutch: valluik — door set into floor or ceiling
- Dutch: valdeur — door set into floor or ceiling
- Esperanto: klapopordo — door set into floor or ceiling
- Esperanto: klappordo — door set into floor or ceiling
- Esperanto: plankpordo — door set into floor or ceiling
- Esperanto: plankopordo — door set into floor or ceiling
- Finnish: luukku — door set into floor or ceiling
- French: trappe — door set into floor or ceiling
- Galician: zapón — door set into floor or ceiling
- Galician: zapa — door set into floor or ceiling
- Galician: trapa — door set into floor or ceiling
- Galician: trapela — door set into floor or ceiling
- German: Falltür — door set into floor or ceiling
- Greek: καταπακτή (katapaktí) — door set into floor or ceiling
- Hungarian: csapóajtó — door set into floor or ceiling
- Icelandic: hleri — door set into floor or ceiling
- Icelandic: fallhleri — door set into floor or ceiling
- Icelandic: hlemmur — door set into floor or ceiling
- Italian: botola — door set into floor or ceiling
- Māori: kopani — door set into floor or ceiling
- Norman: trappe — door set into floor or ceiling
- Norwegian Bokmål: lem — door set into floor or ceiling
- Polish: klapa — door set into floor or ceiling
- Portuguese: alçapão — door set into floor or ceiling
- Russian: люк (ljuk) — door set into floor or ceiling
- Russian: лаз (laz) — door set into floor or ceiling
- Spanish: trampa — door set into floor or ceiling
- Spanish: escotillón — door set into floor or ceiling
- Spanish: trampilla — door set into floor or ceiling
- Spanish: escotilla — door set into floor or ceiling
- Swedish: fallucka — door set into floor or ceiling
- Swedish: lucka — door set into floor or ceiling
- Bulgarian: падаща врата (padašta vrata) — similar door on a stage
- Catalan: trapa — similar door on a stage
- Danish: faldlem — similar door on a stage
- Dutch: valluik — similar door on a stage
- Finnish: luukku — similar door on a stage
- Italian: botola — similar door on a stage
- Polish: zapadnia — similar door on a stage
- Russian: люк (ljuk) — similar door on a stage
- Spanish: escotillón — similar door on a stage
- Swedish: fallucka — similar door on a stage
- Catalan: porta del darrere — secret access to a program
- Dutch: achterdeur — secret access to a program
- Finnish: takaportti — secret access to a program
- Polish: wejście — secret access to a program
- Russian: лазе́йка (lazéjka) — secret access to a program
Real reading context