Definition

Relating to something that is being studied or investigated, especially in the context of drugs or medical procedures that are not yet approved for general use.

Example

The investigational drug showed promising results in the early stages of clinical trials.

Conversation

Have you heard about the new investigational drug they're testing for headaches?

Yeah, I read an article about it — sounds promising!

I wonder how long it will take before it gets approved for everyone.

Hopefully not too long; it could really help a lot of people.

Synonyms & Antonyms

Root Explanation

Investigational → It is formed from "investigate" (from Latin "investigare", meaning to track or search into) and the suffix "-ional" (meaning relating to). The word "investigational" refers to something that is related to the process of investigating or examining something closely.

Memory Tip

Think of the act of 'tracking' or 'searching into' something ('investigate') and how the '-ional' suffix indicates it relates to that process. This helps you remember that 'investigational' pertains to the act of investigating.

Visually Confused Words