Definition, Meaning & Synonyms

granum

noun
/ˈɡreɪ.nəm/
Definition
A granum is a small, disc-shaped structure found within chloroplasts, which is involved in the process of photosynthesis.
Examples
  • The granum contains chlorophyll, which captures light energy.
  • Each granum is comprised of multiple thylakoid membranes stacked together.
  • During photosynthesis, the granum plays a crucial role in converting light energy into chemical energy.
Meaning
Granum refers specifically to the stacks of thylakoids in plant cells where light-dependent reactions of photosynthesis take place.
Synonyms
  • Thylakoid stack
  • Plastid