Definition

Relating to or containing phosphorus, particularly in a form that has a lower valence than certain other phosphorus compounds.

Example

The phosphorous compounds are essential for plant growth.

Conversation

Did you see the new plant I got for my room?

Yeah, I love it! Is it phosphorous based?

I think so; it really helps with the growth.

That makes sense! Plants need the right nutrients.

Synonyms & Antonyms

Root Explanation

Phosphorous → It is formed from "phosphor" (from Greek "phosphoros", meaning light-bringer or morning star) and the suffix "-ous" (meaning full of or possessing). The word "phosphorous" refers to a substance that is full of or possesses phosphorus, which is known for its ability to emit light in the dark.

Memory Tip

Think of 'light-bringer' ('phosphor') to remember that 'phosphorous' refers to something that possesses the quality of emitting light.

Visually Confused Words