Definition of organelle in English:

organelle

noun

Biology
  • Any of a number of organized or specialized structures within a living cell.

    • ‘The cytoplasm contained organelles, including endoplasmic reticulum and mitochondria.’
    • ‘Although the many organelles within the cell are enclosed by membranes, they are highly dynamic, and many are in constant communication with each other.’
    • ‘Scattered throughout the plasma in cells are organelles called mitochondria.’
    • ‘Mitochondria are highly dynamic organelles undergoing rapid movement within the cell.’
    • ‘Cilia and flagella are cell organelles for motility and are conserved among a variety of eukaryotic organisms.’

Origin

Early 20th century: from modern Latin organella, diminutive of organum instrument, tool (see organ).

Pronunciation:

organelle

/ˌɔːɡəˈnɛl/