Definitions

1. noun

The smallest unit of a multicellular organism that is formed during embryonic development, such as a cell or group of cells in an animal or a cell in a plant.

“During embryonic development, the micromeres began to differentiate into different types of cells.”

2. noun

A small part or portion of something, especially a cell or group of cells in an organism.

“The micromere of the leaf was responsible for its unique texture and color.”