Definition

Describing a type of radiation that does not have enough energy to remove tightly bound electrons from atoms or molecules, meaning it does not cause ionization.

Example

Nonionizing radiation, such as radio waves, is generally considered safe for human exposure.

Conversation

Did you know that some types of radiation are nonionizing?

Really? I thought all radiation was harmful.

Actually, nonionizing radiation is generally considered safe.

That's good to know! I always worried about exposure.

Synonyms & Antonyms

Root Explanation

Nonionizing → It is formed from "non-" (meaning not) and "ionizing" (from the root "ion" which comes from Greek "ion" meaning going or to go, and the suffix "-izing" which indicates causing to become). The word "nonionizing" refers to radiation that does not cause the ionization of atoms or molecules, meaning it does not remove electrons from them.

Memory Tip

Think of 'non-' meaning not, and 'ionizing' meaning causing to go or change. This helps you remember that nonionizing refers to something that does not cause a change in the atomic structure.

Visually Confused Words