from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A part or structure that buds to form a series of segments, as the main body part of a tapeworm or the polyp stage in certain jellyfish.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The jointed series of segments of the body of a tapeworm, posterior to the unjointed collum.
from the GNU version of the Collaborative International Dictionary of English
- n. A form of the larva of certain Discophora in a state of development succeeding the scyphistoma. The body of the strobila becomes elongated, and subdivides transversely into a series of lobate segments which eventually become ephyræ, or young medusæ.
- n. A mature tapeworm.
from The Century Dictionary and Cyclopedia
- n. In zoology: In Hydrozoa, a stage in the development of a discophoran, supervening upon the scyphistoma or hydra-tuba stage by the development of ephyræ, and before these become detached from one another and from the stalk upon which they grow. See ephyra, 1, and scyphistoma.
- n. In Vermes, a segmented tapeworm; the chain of zooids formed by a scolex and the proglottides which have successively budded from it.
- n. [capitalized] A supposed genus of acalephs, based on the strobiliform stage of certain hydrozoans.
- n. [capitalized] In entomology, a genus of lepidopterous insects.
In many cases the terminal proglottid packed with eggs breaks away from the strobila and is freed within the feces
The strobila consists of linearly arranged sectional segments called proglottids.
Behind the scolex is the narrow neck which is proliferative (produces all each segment) and gives rise to the body segments called strobila.
A medusa begets a ciliated larva, the larva begets a polyp, the polyp begets a strobila, and the strobila begets a medusa again; the cycle of reproduction being completed in the fourth generation.
But in the case of the strobila we say that it is not changed, but dies, and is no part of the personality of the medusa.
After attatchment to the inside of the intestine the tapeworm starts producing proglottids and the strobila (the bulk of the tapeworm's body) forms.
 They are made up of a knoblike head or scolex (where most of the sensory organs are located-cephalization), a short, unsegmented neck following the scolex, and multiple flat, rectangular body segments or proglottids forms the strobila.
 They are made up of a knob-like head or scolex (where most of the sensory organs are located-cephalization), a short, unsegmented neck following the scolex, and multiple flat, rectangular body segments or proglottids forms the strobila.
After attachment to the inside of the intestine the tapeworm starts producing proglottids and the strobila (the bulk of the tapeworm's body) forms.
(I’m sort of embarrassed for not knowing this literary term). proglottidean From proglottid, each segment in the strobila of a tapeworm containing a complete, sexually mature reproductive system.