Attraction Sphere

Part of speech: noun (n.)

1. The central mass of the aster in mitotic cell division; centrosphere.

2. Less often, the mass of archoplasm left by the aster in the resting cell.

3. (Bot.) A small body situated on or near the nucleus in the cells of some of the lower plants, consisting of two centrospheres containing centrosomes. It exercises an important function in mitosis.