Definition

A chemical element that is essential for life, making up about 21% of the Earth's atmosphere. It is a colorless and odorless gas that supports breathing in animals and plants and is necessary for burning substances.

Example

Plants produce oxygen during photosynthesis, which is vital for most living organisms.

Conversation

Did you know that oxygen makes up about 21 percent of our atmosphere?

Yeah, I heard that in science class! It's pretty fascinating.

It's amazing how essential oxygen is for life on Earth.

Absolutely! We wouldn't survive without it.

Synonyms & Antonyms

Root Explanation

Oxygen → It is formed from "oxy-" (from Greek "oxus", meaning sharp or acid) and "-gen" (from Greek "genes", meaning born of or producing). The word "oxygen" refers to a substance that produces acids, as it was originally thought to be a necessary component in the formation of acids.

Memory Tip

Think of 'sharp' or 'acid' ('oxy-') and 'producing' ('-gen') to remember that oxygen is a substance that produces acids.

Visually Confused Words