noun
Biology term for a specialized subunit within a cell, such as a mitochondrion or ribosome. The shorter synonym 細胞小器官 is also common.
See also: 細胞小器官
ミトコンドリアは細胞内小器官の一つです。
Mitochondria are one type of organelle.
細胞内小器官の働きを顕微鏡で観察した。
We observed the functions of organelles under a microscope.
Synonym; 細胞小器官 is a slightly shorter form with the same meaning. Both are used in biology, but 細胞内小器官 explicitly includes 内 (inside) for clarity.
Compound of 細胞 (cell) + 内 (inside) + 小 (small) + 器官 (organ). The term is a direct translation of the English 'organelle'.