equal sign
B2Formal, Technical, Academic
Definition
Meaning
The symbol '=' used in mathematics and logic to indicate that two expressions have the same value or are equivalent.
A symbol representing equivalence, balance, or correspondence; sometimes used metaphorically to denote fairness or identical status.
Linguistics
Semantic Notes
Primarily a technical/mathematical term; metaphorical use is less common and often appears in discussions of equality, justice, or computing.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences; both use 'equal sign'. In UK contexts, 'equals sign' is a common alternative.
Connotations
Identical in both varieties.
Frequency
Slightly more frequent in American educational materials due to curriculum emphasis on algebra terminology.
Vocabulary
Collocations
Grammar
Valency Patterns
The equal sign [connects/separates] two expressions.An equal sign [indicates/denotes] equivalence.You need to [put/insert] an equal sign between the numbers.Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “put an equal sign between (metaphorical: to treat as equivalent)”
- “on the other side of the equal sign (representing a counterpart)”
Usage
Context Usage
Business
Rare, except in data analysis or spreadsheet contexts (e.g., 'Use an equal sign to start a formula in Excel').
Academic
Common in mathematics, physics, computer science, and logic textbooks and papers.
Everyday
Limited to educational help, homework discussions, or basic calculations.
Technical
Frequent in programming, engineering, and scientific notation.
Examples
By Part of Speech
verb
British English
- To equal sign is not a standard verb usage.
American English
- To equal sign is not a standard verb usage.
adverb
British English
- Not applicable as an adverb.
American English
- Not applicable as an adverb.
adjective
British English
- The equal-sign function is crucial in spreadsheets.
American English
- The equal-sign notation is standard in algebra.
Examples
By CEFR Level
- The equal sign looks like two small lines.
- Write 2 + 2, then put an equal sign, then write 4.
- In the equation x = 10, the equal sign shows that x has the value 10.
- Remember to always include an equal sign in your algebraic expressions.
- The programmer forgot an equal sign in the conditional statement, causing a syntax error.
- Metaphorically, you cannot put an equal sign between hard work and luck.
- The misuse of the equal sign in predicate logic can lead to significant formal errors.
- In spreadsheet modelling, the equal sign initiates every formula, determining computational relationships.
Learning
Memory Aids
Mnemonic
Think of a balanced scale: the equal sign is the bar in the middle showing both sides are level.
Conceptual Metaphor
BALANCE, EQUIVALENCE, FAIRNESS (e.g., 'In justice, we put an equal sign between crime and punishment').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating as 'знак равенства' in non-mathematical metaphors where it might sound unnatural.
- Do not confuse with 'equal to sign' – 'equal sign' is the standard term.
Common Mistakes
- Writing 'equal sigh' instead of 'sign'.
- Using a single dash '-' instead of '='.
- Placing spaces incorrectly around the equal sign in equations (e.g., 'x = 5' is correct, 'x=5' is also acceptable but less formal).
Practice
Quiz
Which of the following is a correct statement about the equal sign?
FAQ
Frequently Asked Questions
Primarily yes, but it appears metaphorically in discussions of fairness, computing, and logic.
No difference in meaning; 'equals sign' is slightly more common in UK English, while 'equal sign' is standard in US English.
Press the key marked '=', usually located near the backspace or enter key, often requiring the Shift key.
Yes, but its function varies: a single '=' often means assignment, while '==' tests equality.