Definition of Hash
Quick Meaning of Hash
A way to store data using keys (like names) to find values (like phone numbers) very quickly.
Detailed Definition of Hash
Data structure using key-value pairs for fast lookup; also a cryptographic function producing fixed-length output.
How to Pronounce Hash
Stress pattern: O (1-syllable word).
Tip: One syllable: HASH. Rhymes with 'cash', 'bash', 'dash'.
Origin and Etymology of Hash
French: hacher (to chop) → hash (chopped); computing sense from randomized mixing
How to Use Hash in a Sentence
Each example shows “hash” with a CEFR level so learners can pick examples that match their fluency.
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“Hash tables retrieve values using unique keys.”
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“A hash function converts data into a fixed-size code.”
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“SHA-256 produces a hash for secure passwords.”
Synonyms and Antonyms of Hash
Common Synonyms for Hash
Smart Synonyms for Hash — When to Use Each
- hash table
- implementation of hash structure with key-value pairs
- dictionary
- similar structure; Python calls hash tables dictionaries
- hash function
- algorithm that converts input to hash value
Common Collocations with Hash
These phrases pair with “hash” in everyday English:
- hash table
- hash function
- cryptographic hash
Common Mistakes When Using Hash
Even fluent speakers slip up with “hash”. Here’s how to avoid the most common errors:
- ✗ Wrong: hash guarantees unique values for unique keys
- ✓ Correct: hash is deterministic but can have collisions
- Why: Different keys can produce same hash value (collision); not one-to-one mapping
- ✗ Wrong: hash functions are reversible
- ✓ Correct: cryptographic hash functions are one-way
- Why: Good hashes cannot be reversed; security depends on this irreversibility
Other Forms of Hash
- Noun: hash
Frequently Asked Questions About Hash
What is the meaning of "Hash"?
A way to store data using keys (like names) to find values (like phone numbers) very quickly.
How do you pronounce "Hash"?
The IPA is /hæʃ/. One syllable: HASH. Rhymes with 'cash', 'bash', 'dash'.
What part of speech is "Hash"?
"Hash" is a noun at B2 level (Common European Framework).
What are synonyms for "Hash"?
Common synonyms include hash table, dictionary, map.
How do you use "Hash" in a sentence?
For example: "Hash tables retrieve values using unique keys."