Definition

Serving to prevent disease or protect against something harmful.

Example

The doctor recommended a prophylactic treatment to reduce the risk of infection.

Conversation

Have you heard about the new prophylactic measures at the clinic?

Yeah, I read about them; they sound really effective.

I think it’s great that they’re focusing on prophylactic care to prevent illnesses.

Absolutely! It’s so important to stay ahead of potential health issues.

Synonyms & Antonyms

Definition

A device or measure used to prevent disease or pregnancy, such as a condom or vaccine.

Example

He always uses a prophylactic to ensure safety during intimate moments.

Conversation

Did you remember to bring any prophylactic supplies for the trip?

Yeah, I packed some just in case.

That's smart! It’s always better to be safe than sorry.

Root Explanation

Prophylactic → It is formed from "pro-" (meaning before) and "phylaktikos" (from Greek, meaning to guard or protect). The word refers to measures taken to guard against disease or unwanted outcomes before they occur.

Memory Tip

Think of taking precautions 'before' ('pro-') something happens to 'guard' ('phylaktikos') against it — that's why prophylactic means preventive.

Visually Confused Words