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Semantics

Semantics is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Semantics rather than just read about it. In short: Semantics is the study of linguistic meaning. It examines what meaning is, how words get their meaning, and how the meaning of a complex expression depends on its parts.

Semantics — main illustration
Semantics — illustration

Key takeaways

  • Semantics belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Semantics to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Semantics from memory before moving on to harder problems.

Reference excerpt

Semantics is the study of linguistic meaning. It examines what meaning is, how words get their meaning, and how the meaning of a complex expression depends on its parts. Part of this process involves the distinction between sense and reference. Sense is given by the ideas and concepts associated with an expression while reference is the object to which an expression points. Semantics contrasts with syntax, which studies the rules that dictate how to create grammatically correct sentences, and pragmatics, which investigates how people use language in communication. Semantics, together with syntactics and pragmatics, is a part of semiotics. Lexical semantics is the branch of semantics that studies word meaning. It examines whether words have one or several meanings and in what lexical relations they stand to one another. Phrasal semantics studies the meaning of sentences by exploring the phenomenon of compositionality or how new meanings can be created by arranging words. Formal semantics relies on logic and mathematics to provide precise frameworks of the relation between language and meaning. Cognitive semantics examines meaning from a psychological perspective and assumes a close relation between language ability and the conceptual structures used to understand the world. Other branches of semantics include conceptual semantics, computational semantics, and cultural semantics. Theories of meaning are general explanations of the nature of meaning and how expressions are endowed with it. According to referential theories, the meaning of an expression is the part of reality to which it points. Ideational theories identify meaning with mental states like the ideas that an expression evokes in the minds of language users. According to causal theories, meaning is determined by causes and effects, which behaviorist semantics analyzes in terms of stimulus and response. Further theories of meaning include truth-conditional semantics, verificationist theories, the use theory, and inferentialist semantics. The study of semantic phenomena began during antiquity but was not recognized as an independent field of inquiry until the 19th century. Semantics is relevant to the fields of formal logic, computer science, and psychology.

… excerpt ends here. Continue reading the full article.

Illustrations

Semantics: A central topic in semantics concerns the relation between language, world, and mental concepts.
A central topic in semantics concerns the relation between language, world, and mental concepts.
Semantics: Semantics is not focused on subjective speaker meaning and is instead interested in public meaning, like the meaning found in general dictionary definitions.
Semantics is not focused on subjective speaker meaning and is instead interested in public meaning, like the meaning found in general dictionary definitions.
Semantics: The distinction between sense and reference was first introduced by the philosopher Gottlob Frege.[29]
The distinction between sense and reference was first introduced by the philosopher Gottlob Frege.[29]
Semantics: The semiotic triangle aims to explain how the relation between language (Symbol) and world (Referent) is mediated by the language users (Thought or Reference).
The semiotic triangle aims to explain how the relation between language (Symbol) and world (Referent) is mediated by the language users (Thought or Reference).
Semantics: Parse trees, like the constituency-based parse tree, show how expressions are combined to form sentences.
Parse trees, like the constituency-based parse tree, show how expressions are combined to form sentences.

Worked examples

Example 1 — a first encounter with Semantics

Start with the simplest possible case. Write down what Semantics claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Semantics before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Semantics ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Semantics

In research
Semantics appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Semantics in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Semantics is common in secondary-school and first-year university syllabi. It links to neighbouring topics Concepts in logic, Grammar, Linguistics terminology, so understanding it makes those chapters shorter.
In everyday life
Look for Semantics outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Semantics in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Semantics means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Semantics out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Semantics in simple terms?

Semantics is the study of linguistic meaning. It examines what meaning is, how words get their meaning, and how the meaning of a complex expression depends on its parts.

Why does Semantics matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Semantics?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Semantics.

Tags

  • Concepts in logic
  • Grammar
  • Linguistics terminology
  • Meaning (philosophy)
  • Semantics

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