Is k a word and what does it mean?

"K" is not a complete word in the English language. It's an abbreviation or slang term used in various contexts:

1. Abbreviation:

* Okay: The most common usage, meaning "alright," "yes," or "I understand."

* Kilogram: A unit of mass in the metric system.

* Kelvin: A unit of temperature in the metric system.

* Thousand: Often used in numerical expressions like "$10K" for $10,000.

2. Slang:

* Cool: Expressing approval or agreement.

* Understood: Similar to "Okay" in meaning.

3. Symbol:

* Potassium: The chemical element with the symbol "K."

So, "k" itself isn't a word, but it's a commonly used abbreviation and slang term with different meanings depending on the context.