strobilation

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Asexual reproduction by division into body segments, as in tapeworms and jellyfish.

Century Dictionary and Cyclopedia

1. n. Formation or production of strobiles; metameric division of a scyphistoma or hydra tuba into medusæ.
2. n. Gemmation of the successive links or joints of a tapeworm; also, the transverse fission of various worms.

Wiktionary

1. n. biology A form of asexual reproduction by division into body segments, as in tapeworms and jellyfish

GNU Webster's 1913

1. n. (Zoöl.) The act or phenomenon of spontaneously dividing transversely, as do certain species of annelids and helminths; transverse fission. See Illust. under syllidian.