Definition

A person who believes in the idea that organisms develop from pre-existing forms rather than through gradual changes.

Example

The preformationist argued that all living beings were already contained in miniature form within their parents.

Conversation

Have you ever heard of a preformationist?

No, what does that mean?

It's someone who believes in the idea that organisms develop from miniature versions of themselves.

That's interesting! I never knew there was a term for that.

Synonyms & Antonyms

Root Explanation

Preformationist → It is formed from "pre-" (meaning before) and "formation" (from Latin "formatio", meaning the act of shaping or forming) and the suffix "-ist" (meaning a person who practices or is concerned with). The term refers to a person who believes in the theory that organisms develop from pre-existing forms rather than through a process of gradual development.

Memory Tip

Think of someone who believes in 'shaping' ('formation') that happens 'before' ('pre-') — that's why a preformationist is someone who thinks organisms are formed from existing shapes.

Visually Confused Words