Polypoid see polyp

polyprostatic a. [Gr. polys, many; prostates, stands before] (ANN: Oligochaeta) Having more than six prostates in three segments or over eight in two segments.

polysaccharides n.pl. [Gr. polys, many; L. saccharum, sugar] A carbohydrate, one molecule of which can yield by hydrolysis, many monosaccharide molecules, usually structural or storage, such as chitin, cellulose, starch and glyco-gen.

polysaprobic a. [Gr. polys, many; sapros, putrid] Referring to a body of water with high decomposition rate and very low oxygen.

polysiphonous a. [Gr. polys, many; siphon, tube] (CNID: Hy-drozoa) Pertaining to a hydrocaulis covered by stolons from the hydrorhiza. see monosiphonous.

polysomatic a. [Gr. polys, many; soma, body] Tissues or individuals having both diploid and polyploid cells.

polysome n. [Gr. polys, many; soma, body] A multiribosomal structure consisting of ribosomes bound by messenger RNA; very active in protein synthesis.

polysomic a. [Gr. polys, many; soma, body] A diploid cell with one or more chromosomes represented three or four times, instead of two.

polyspermy n. [Gr. polys, many; sperma, seed] Entry of several sperm into the ovum.

polystichous a. [Gr. polys, many; stichos, row] Arranged in many rows; multifarious.

polystomate, polystomatous a. [Gr. polys, many; stoma, mouth] 1. Having many mouths. 2. (ANN: Oligochaeta) Referring to nephridia with several nephrostomes.

polytene chromosomes Giant chromosomes. see band.

polytesticulate a. [Gr. polys, many; L. testiculus, small testicle] (ANN: Oligochaeta) Having more than two pairs of testes.

polythalamous gball (ARTHRO: Insecta) In Hymenoptera, a chalcid gall containing more than one larval cell.

polythecal a. [Gr. polys, many; theke, case] (ANN: Oli-gochaeta) Earthworm having more than one or two pair of spermathecae per segment. see monothecal.

polythetic a. [Gr. polys, many; tithenai, to place] Referring to a classification with each member of a group having the majority of a set of characters. see monothetic.

polytopic a. [Gr. polys, many; topos, place] Occurring in several geographical locations.

polytrophic a. [Gr. polys, many; trophein, to feed] 1. Having nutrition supplied from more than one organism or source.

see oligotrophic. 2. Having many trophi.

polytrophic ovariole (ARTHRO: Insecta) An ovariole in which trophocytes accompany each oocyte and are enclosed within the follicle; a polytrophic egg tube. see meroistic ovariole.

polytropic a. [Gr. polys, many, tropikos, a turning] (ARTHRO: Insecta) Visiting many kinds of flowers for nectar. see monotropic, oligotropic.

polytypic a. [Gr. polys, many; typos, type] A taxon containing subordinate units.

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