Logos is a rhetorical strategy used to establish reason. Another way to define logic / logos is to think of it as:

the use of facts, evidence, and sound reasoning to support an argument or point of view. It involves presenting logical arguments, clear statements, and logical connections between ideas in order to persuade an audience. Logos appeals to the logical side of people's thinking process and aims to convince them through the power of reasoning and evidence.

the use of evidence, reasoning, and logical arguments to persuade and convince the audience. It involves presenting facts, statistics, examples, and expert opinions to support a claim or argument. By using logos, a speaker or writer appeals to the audience's sense of logic and rationality, providing them with a logical framework to understand and accept the message being conveyed.

the use of evidence, reasoning, and logical thinking to persuade or argue a point.

In order to understand and define logos as a rhetorical strategy, it is helpful to break it down into its components and understand its purpose. Logos, derived from the Greek word meaning "reason" or "logic," is used to appeal to the audience's sense of rationality and logic. It aims to convince and persuade through the use of evidence, facts, and logical reasoning.

To further define logos, it is important to recognize how it operates in communication. Logos relies on presenting a well-structured argument that is supported by evidence, logical reasoning, and appeals to common sense. It involves utilizing data, statistics, expert opinions, and logical sequence to demonstrate the credibility and validity of the argument.

When someone refers to logos as a way to establish reason, they are highlighting the role of rational and logical thinking in making persuasive arguments. By employing logos in communication, one can effectively engage the audience's intellect and decision-making capabilities, making the argument more compelling and convincing.

To illustrate the concept of logos in practice, let's consider an example: Suppose someone is trying to persuade others to support a proposal to implement bike lanes in a city. They could use logos by presenting statistical evidence showing an increase in bike accidents, studies demonstrating the positive impact of bike lanes on reducing accidents, and logical reasoning that highlights the benefits of promoting environmentally friendly transportation options.

So, to define "logic" or "logos" as a rhetorical strategy, it can be understood as the persuasive use of evidence, reasoning, and logical thinking to establish reason and appeal to an audience's sense of rationality.