What parts of speech is delta?

"Delta" can be several parts of speech, depending on its context:

1. Noun: This is the most common usage. "Delta" refers to:

* A triangular area of land at the mouth of a river: "The Nile River forms a large delta."

* The fourth letter of the Greek alphabet (Δ): "The formula uses delta to represent change."

* A variant of a virus or other pathogen: "The delta variant of COVID-19 was very contagious."

* A company or organization: "Delta Airlines is a major carrier."

2. Adjective:

* Relating to a delta: "The delta region is fertile."

3. Verb: This is less common, but sometimes used in a mathematical context:

* To change or vary: "The temperature deltaed significantly."

Example Sentences:

* Noun: "The Mississippi River has a vast delta."

* Adjective: "The delta region is known for its agriculture."

* Verb: "The stock price deltaed by 10% after the announcement."

Without more context, it's impossible to say for sure which part of speech "delta" is.