Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Botany A partition dividing an organ, such as an ovary or a fruit, into chambers.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. partition (in an organ); septum

from the GNU version of the Collaborative International Dictionary of English

  • n. A separating tissue; a partition; a septum.
  • n. One of the partitions which divide a compound ovary into cells.
  • n. One of the transverse, calcareous partitions between the radiating septa of a coral.

from The Century Dictionary and Cyclopedia

  • n. In botany: A partition; especially, one of the partitions within ovaries and fruits formed by the coherence of the sides of the constituent carpels. Spurious or false dissepiments are partitions otherwise formed.
  • n. In hymenomycetous fungi, same as trama.
  • n. In zoöl. and anat.: In general, a septum or partition; that which puts asunder two or more things by coming between them: as, the dissepiment of the nostrils.
  • n. Specifically— One of the imperfect horizontal plates which connect the vertical septa in corals, and divide the loculi between the septa into a series of intercommunicating cells. The internal separation or division between the segments of annelids, as worms.

Etymologies

Latin dissaepīmentum, partition, from dissaepīre, to divide : dis-, dis- + saepīre, hedge off (from saepēs, hedge).
(American Heritage® Dictionary of the English Language, Fourth Edition)

Examples

  • Now an image is the likeness of a thing either in form or substance, or in both, but not in the sense that the image is a part of or a dissepiment of the original.

    Autobiography, sermons, addresses, and essays of Bishop L. H. Holsey, D. D.,

  • You will find nothing but blunder and embarrassment result from any endeavour to enter into further particulars, such as "the relation of the dissepiment with respect to the valves of the capsule," etc., etc., since "in the various species of Veronica almost every kind of dehiscence may be observed" (C. under V. perfoliata, 1936, an

    Proserpina, Volume 2 Studies Of Wayside Flowers

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