Definition

The process where a group of fast-growing cells surrounds a group of slower-growing cells, often seen during the early stages of development in embryos.

Example

During embryonic development, epiboly allows the cells to spread and cover the surface of the embryo.

Conversation

I was reading about embryonic development, and I found out about epiboly in the process.

Oh really? What does that mean exactly?

It's when a group of rapidly dividing cells grows around slower ones, like during gastrulation.

That sounds fascinating! I've never heard of epiboly before.

Synonyms & Antonyms

Root Explanation

Epiboly is formed from "epi-" (meaning upon or over) and "ballein" (meaning to throw). The term describes the process where cells move over or upon another layer during embryonic development.

Memory Tip

Think of cells 'throwing' themselves 'upon' another layer — that's what epiboly means in the context of development.

Visually Confused Words