pyrenoid

1 9.9

A tiny body in algae and some plant cells that helps use carbon dioxide to make food using sunlight

noun
/ˈpaɪrəˌnɔɪd/

Specialized

: pirenoide

The pyrenoid is essential for efficient carbon fixation.

Examples

Researchers study the pyrenoid to understand how algae capture carbon dioxide.
Under the microscope, the pyrenoid appeared as a dense, round body within the cell.
The scientist identified a single pyrenoid in the center of the algal chloroplast.
Some algae contain multiple pyrenoids within their cells.
The pyrenoid is a crucial part of many algae, aiding in their ability to fix carbon during photosynthesis.
Researchers studied the structure of the pyrenoid to understand its role in photosynthesis in certain plants.
In various species of algae, the pyrenoid can be found within the chloroplasts, contributing significantly to carbon fixation.

Surface Forms

pyrenoid singular

pyrenoids plural

Morphology

pyrenoid = pyren + oid

The combining form 'pyren-' is not a productive standalone English word and the scientific name is borrowed (New Latin/Greek), so learners cannot derive the meaning from familiar English components.

Etymology

The word pyrenoid comes from the Greek root pyren meaning 'stone' or 'seed' and the ending -oid meaning 'like', the same -oid you see in asteroid or humanoid. So a pyrenoid is a 'stone-like' or very dense round body inside a cell, which fits how it looks under a microscope and why it helps algae capture carbon dioxide during photosynthesis.