I 



PLASMOKINESIS 



1113 



PLASTID 



figure; yoveia, generation]. In biology, the genera- 

 tion of an organism from plasma. 



Plasmokinesis (plaz-mo-kin-e / -sis) \jt~KaGua, plasma ; 

 tic, motion]. Indirect protoplasmic cell-division. 



Plasmology ( plaz-mol' -o-je) [—Xaoua, a molded figure ; 

 . science]. In biology, the study of cells and 

 cell-stuff, or plasma ; histology. 



Plasmolysis ( plaz-mol' -is-is) [rc/Maua, plasm; Xveiv, 

 to loose]. In biology : (a) the separation of cell- 

 protoplasm from the inclosing cell-wall ; (b) the con- 

 traction of living protoplasm under the influence of 

 g nts. 



Plasmolytic (plaz-mo-lil'-ii) [-/.ao/ia, plasm ; Awnc , a 

 loosing]. In biology, exhibiting or characterized by 

 plasmolysis. P. Agent, any substance that causes 

 contraction of protoplasm. 



Plasmoma {plaz-mo'-mali) [-/.aoua, plasm ; bua, tu- 

 mor; //., Plasmomata']. A fibroplastic tumor. 



Plasmon (plaz'-mon) [— /.aaua, a thing molded]. An 

 albuminous food-product, introduced by Siebold, of 

 high nutritive property and easily absorbed. 



Plasmoschisis ( plaz - mos f - kis - is) [n/Aaua, plasma; 



- <:, cleavage]. A name given by Lowit to the 



separation of protoplasmic particles from the bodies of 



leukocytes, first observed by him in the blood of crabs 



kept at a low temperature. 



Plasmosoma ( plaz-mo-so'-mah) \j:7Aaua, plasm ; ou/ia, 

 body: pi., Plasmosomata~\. A karyosoma, especially 

 one which is safranophilous. 



Plasodermatosis (plaz-o-der-mat-o'-sis) \^7Agoelv, to 

 form ; depua, skin ; voaog, diseases]. A skin-affection 

 characterized by the formation of new tissue. 



Plasodermitis ( plaz-o-der-mi' -lis) [-/Aaua, plasma; 

 depua, skin ; tr*c, inflammation]. A neoplasm of the 

 skin, of inflammatory origin. 



Plasome pla'-som) \_—7Aaua, a molded figure ; aafia, 

 body, matter]. In biology, one of the hypothetic, 

 minute vital particles of Wiesner and Briicke, resem- 

 bling, as regards their properties, the pangenes of De 

 Vries and the biophors of Weismann. 



Plasson y plas' -son) \j:7Aaaziv, to form or mold]. In 

 biology, primitive or undifferentiated protoplasm ; the 

 cell in the cytode stage. 



Plastauxia {plas-tawks' -e-ah) [tz7Aooeiv, to mold ; ai^q^ 

 increase]. An increase of plasticity. 



Plaster ( plas'-ter) [EfnT/xto-pov, emplastrum, plaster] . 

 An adhesive, solid or semi-solid medicinal substance 

 spread upon cloth or other flexible substance, for ap- 

 plication to the external part of the body. According 

 to the principal ingredient, it is called Emplastrum 

 Aconiti, Ammoniaci, Arnicas, Belladonna?, Capsici, 

 Hydrargvri, Picis cum cantharidae, Resinae, Saponis, 

 etc. P., Adhesive, resin-plaster. The adhesive 

 plaster used by surgeons must be warmed before being 

 applied ; it will also stick after having been dipped in 

 ether. P., Antiseptic, a plaster consisting of the 

 ordinary adhesive plaster dipped in a hot solution of 

 carbolic acid (i to 60). P., Black, lead plaster. P.- 

 cast, a model of an object produced by pouring 

 plaster-of-Paris mixed with water into a mold of that 

 object. P., Court, a plaster prepared by dissolving 

 30 grams of isinglass in enough water to make 360 

 grams, and spreading the mixture thinly upon silk 

 in two portions, one the watery solution, the other 

 mixed with 120 grams of alcohol and three of glycerin. 

 The reverse side of the silk is painted with tincture of 

 benzoin. It adheres firmly to the skin when moistened. 

 P., Diachylon. Synonym of P. , Lead. See Plum- 

 bum. P., English. Synonym of P., Court. P., Is- 

 inglass, a substitute for adhesive plaster, used in 

 superficial wounds. P. Jacket, a bandage surround- 

 ing the trunk, and made of plaster-of-Paris. It is 



used in caries of the vertebrae. P., Lead. See 

 Plumbum. P., Logan's, a plaster containing litharge, 

 lead carbonate, Castile soap, butter, olive-oil, and 

 mastic. P. -machine, an apparatus used by pharma- 

 cists for spreading plasters. P., Mahy's, one contain- 

 ing lead carbonate, olive-oil, yellow wax, lead-plaster, 

 and Florentine orris. P., Mercurial. See Hydrar- 

 gyrum. P., Miraculous, one containing red oxid of 

 lead, olive-oil, alum, and camphor. P. -mull, a plaster 

 made by incorporating with mull or thin muslin a 

 mixture of gutta-percha and some medicament dissolved 

 in benzin. P., Mustard, one made by spreading 

 upon muslin powdered mustard, or a mixture of mustard 

 with flour or other powder, reduced to the consistency 

 of paste by the addition of water. P. -of- Paris, 

 gypsum, or calcium sulphate, used for making stiff or 

 immovable bandages or dressings, or for the prepara- 

 tion of casts. P., Pitch, a plaster containing Burgundy 

 pitch, frankincense, resin, yellow wax, oil of nutmeg, 

 and olive-oil. See Pix. P., Rademacher's, a plas- 

 ter composed of red lead, olive-oil, amber, camphor, 

 and alum. P., Resin, a plaster composed of resin, 

 lead-plaster, and yellow wax or hard soap. See P., 

 Adhesive, and Resina. P., Rubber, a plaster in 

 which the adhesive material is spread on thin muslin, 

 and which sticks without being previously warmed. 

 P., Soap, soap and lead-plaster, with or without resin. 

 P., Spice, a plaster composed of yellow wax, suet, 

 turpentine, oil of nutmeg, olibanum, benzoin, oil of 

 peppermint, and oil of cloves. P., Sticking, emplas- 

 trum resinae. See Resina. P., Stomach. See P., Spice. 

 P., Strengthening, emplastrum ferri. P., Surgeons', 

 adhesive plaster. P., Thapsia, one containing yellow 

 wax, Burgundy pitch, resin, terebinthina cocta, Venice 

 turpentine, glycerin, and thapsia resin. P., Vesicating. 

 Same as Canlharides Plaster. P. , Vigo, one containing 

 lead-plaster, yellow wax, resin, olibanum, ammoniac, 

 bdellium, myrrh, saffron, mercury, turpentine, liquid 

 storax, and oil of lavender. P., Warm, P., Warm- 

 ing, emplastrum picis cum cantharide. 



Plastering ( plas' '-ter-ing) [ifi—'Sjaarpov, a plaster]. A 

 method of improving wines largely practised in 

 Southern Europe. It consists in adding plaster-of- 

 Paris (burnt gypsum) either to the unpressed grapes or 

 to the must. The plaster takes up water, and so in- 

 creases the alcoholic strength of the fermenting must. 

 The wine is given better keeping-qualities, as well as 

 deeper color. ' However, soluble acid sulphate of 

 potassium is left dissolved in the wine, and has an in- 

 jurious effect upon the consumers of the wine. 



Plastic (plas'-tik) [— /Aoosiv, to mold]. Capable of 

 being formed or molded ; plasmic ; formative ; easily 

 modified ; applied to morbid processes attended with 

 fibrinous exudate. P. Bronchitis, pseudo-membranous 

 bronchitis. P. Linitis, a name given to cirrhosis of 

 the stomach. P. Lymph, the inflammatory exudate 

 that covers wounds or inflamed serous surfaces, and 

 which becomes organized by the development in it of 

 blood-vessels. P. Operation, the restoration of lost 

 parts by the transfer of tissue from an adjacent part or 

 by transplantation. P. Surgery, the art of performing 

 plastic operations ; the surgical replacement of lost parts. 



Plasticity (plas-tis'-it-e) \jz/Aogeiv, to mold]. Plastic 

 force. The quality of being plastic. 



Plasticule { plas' - tik - itl ) [-7Aooeiv, to mold]. A 

 molecule of plastic material not yet fully organized. 



Plastid (plas'-tid) [-/.acroc, verbal adj. of -'/.aooetv, 

 to mold or form]. In biology: («) any unicellu- 

 lar elementary organism, cell, or cytode ; a cell ; a 

 mass of protoplasm or of plastic material ; (b) one 

 of a class of protoplasmic granules in the protoplasm 

 of certain plant-cells ; they are referred to three 



