In everyday language, the phrase ‘by definition’ is used to emphasize that something is true according to the very meaning of a word or concept. It highlights the built-in truth of a statement based on how terms are defined. Using ‘by definition in a sentence’ helps clarify concepts, reinforce arguments, or explain logical relationships. This phrase appears in academic writing, casual conversations, and even debates, making it a versatile linguistic tool.
Understanding the Phrase ‘By Definition’
‘By definition’ indicates that a statement is necessarily true because of the meaning of the words used. It often sets a boundary for interpretation and points to the core of a concept. For example, saying ‘a triangle, by definition, has three sides’ relies on the inherent meaning of the word ‘triangle’ to support the statement.
Core Purpose of Using ‘By Definition’
The phrase serves several purposes:
- Clarifying the essential meaning of a term or concept.
- Emphasizing logical necessity or universal truth.
- Strengthening arguments by appealing to definitions rather than opinions.
How to Use ‘By Definition in a Sentence’
When using ‘by definition’ in a sentence, it typically precedes a statement that is universally accepted due to the nature of the concept itself. This can appear in both formal and informal contexts. It is common in academic essays, philosophical discussions, and everyday speech.
Examples of ‘By Definition’ in a Sentence
- ‘Democracy, by definition, gives power to the people.’
- ‘An even number, by definition, can be divided by two without a remainder.’
- ‘By definition, a bachelor is an unmarried man.’
- ‘A mammal, by definition, is a warm-blooded animal that produces milk.’
Using the Phrase in Academic Contexts
In academic writing, ‘by definition’ often appears when explaining theories, principles, or classifications. It helps provide precision and clarity. For instance, in a philosophy paper, you might read: ‘Justice, by definition, requires fairness in the distribution of resources.’ Here, the phrase indicates that the argument is grounded in the conceptual meaning of ‘justice.’
Benefits in Formal Writing
Using ‘by definition’ in essays and research papers allows authors to:
- Anchor arguments in established meanings.
- Avoid ambiguity in complex topics.
- Establish authority by referring to recognized definitions.
Everyday Conversations
Outside academic settings, people use ‘by definition’ casually to make a point. For example, when explaining sports rules, one might say, ‘A foul, by definition, is any illegal contact with another player.’ This usage provides clarity and avoids misunderstandings during discussions.
Common Situations for Usage
- Explaining basic facts: ‘Water, by definition, is a liquid at room temperature.’
- Debating: ‘A paradox, by definition, contradicts itself.’
- Clarifying relationships: ‘By definition, siblings share at least one parent.’
Grammatical Placement
‘By definition’ can appear at the beginning, middle, or end of a sentence, depending on emphasis. Placing it at the start creates a strong declarative tone, while placing it mid-sentence integrates it smoothly into the explanation.
Examples of Placement
- Beginning: ‘By definition, a square has four equal sides.’
- Middle: ‘A square, by definition, has four equal sides.’
- End: ‘A square has four equal sides, by definition.’
Logical Implications
When using ‘by definition,’ you are asserting that the statement cannot logically be false without changing the meaning of the term. This makes it a powerful rhetorical device but also requires careful use. Misusing it can lead to oversimplification or circular reasoning.
Potential Pitfalls
- Overuse can make writing sound repetitive or dogmatic.
- Using ‘by definition’ without an accepted meaning can weaken an argument.
- Assuming universal agreement on a definition might cause disputes in debates.
Learning Through Examples
To understand ‘by definition in a sentence’ more effectively, it helps to create your own examples. Practice with different concepts to see how the phrase functions logically and stylistically. For instance:
- ‘By definition, an apex predator has no natural predators in its habitat.’
- ‘A palindrome, by definition, reads the same backward and forward.’
- ‘By definition, time is a continuous progression of events.’
Relation to Other Phrases
Similar expressions include ‘as defined,’ ‘according to the definition,’ and ‘essentially.’ While these convey related ideas, ‘by definition’ carries a stronger implication of absolute truth derived from meaning itself.
Using ‘by definition in a sentence’ helps anchor communication in clarity and logic. It emphasizes truths that stem directly from the meaning of words or concepts, making it valuable in education, writing, and everyday conversation. Whether explaining scientific facts, debating philosophical ideas, or clarifying simple concepts, the phrase provides a reliable way to express inherent truths. By understanding its proper usage and practicing it in various contexts, speakers and writers can strengthen their communication and ensure their arguments are grounded in meaning.