PREDIASTOLIC 



1174 



PREGNANCY 



Prediastolic ( pre-di-as-tol' '-ik) \_pra;, before; Siaaro?^, 



diastole]. Occuring before the diastole of the heart. 



Predicrotic {pre-di-krof '-ik) \_prce, before ; dtupoToq, 



double beating] . Preceding the dicrotic. P. Wave, the 



primary wave in the dicrotic curve of a sphygmogram. 



Predigastric {pre-di-gas'-trik) \_pra:, before; digastric]. 



Pertaining to the predigastricus. 



Predigastricus {pre - di-gas / - trik - us) \_prce, before ; 



digastric']. The anterior belly of the digastric muscle. 



Predigested {pre-di-jes'-ted) [pros, before; digerere, to 



digest]. Parti}' digested by artificial means before 



being taken into the stomach. P. Foods, foods that 



have been prepared by a process of artificial digestion 



through the agency of various ferments. 



Predigestion ( pre-di-jes' -chun) \_prce, before, digerere, 



to digest] . Previous digestion. 

 Predilatator { pre-dil-at-a' -tor) \_prce, before ; dilator, 

 a dilator]. The anterior dilator muscle of the nostril. 

 Predisponent {pre-dis-po' -nent). Synonym of Predis- 

 posing. 

 Predisposing {pre-dis-po' -zing)[prcz, before ; disponere, 

 to dispose]. A peculiar condition of the system that 

 renders it liable to attack, under a slight exciting 

 cause ; making susceptible. 

 Predisposition {pre-dis-po-zish' '-un) \_pm, before ; dis- 

 ponere, to dispose]. That condition of the body in 

 which causes that leave other persons unaffected call 

 forth an attack of disease in individuals predisposed. 

 Predisposition may be inherited or acquired. The 

 term at the present time refers especially to suscepti- 

 bility to infectious diseases, and implies a peculiar con- 

 dition of the bodily juices or cells, in which these are 

 unable to repel the invasion of pathogenic micro- 

 organisms. 

 Predormition {pre-dor-mish'-un) [pra, before ; dor- 

 mition]. Applied to the stage of unconsciousness 

 immediately preceding actual sleep. 

 Predorsal {pre-dor'-sal) [pro?, before; dorsum, back]. 



Situated in front of the dorsum or back. 

 Preefficients {pre-effsh'-entz) \_prce, before ; efficiens 

 effecting]. In biology, Galton's term for the sum 

 total of predisposing causes, or factors, in the consid- 

 eration of any given phenomenon. 

 Pre-esophageal, Praeesophageal { pre-e-so-faf '-e-al) 

 \_prce, before; Qiaofyayoq, esophagus]. In biology, 

 placed in front of the gullet or anterior to the esopha- 

 geal ring of an invertebrate. 

 Prefloration {pre-flo-ra'-shun) [ prce, before ; Jlorare, 



to blossom]. See Estivation. 

 Prefoliation ( pre-fo-le-a' -shun) [/ra, before ; foliare, 



to put forth leaves]. See Vernation. 

 Prefontanel {pre-f on-tan-el') [prce, before ; fontana, 



a little fountain]. The anterior fontanel. 

 Preforceps {pre-f or' -seps) \_pr<e, before; forceps, for- 

 ceps]. Those hooked or curved anterior fibers of the 

 callosum that reach cephalad into the frontal lobe. 

 Preform {pre- form') [pros, before; formare, to shape, 

 fashion]. In biology, the antecedent determination 

 of a form or shape. 

 Preformation {pre -for - via' - shun) [prce, before; 

 formare, to form]. A previous formation. P., 

 Theory of, a theory prevalent at one time, according 

 to which the germs of all individuals of a species were 

 contained in the first individual of that species created ; 

 that, e. g., Eve held in her ovary the germs of all 

 human beings, one encased within the other. Those 

 who espoused this theory of female encasement were 

 known as Ovulists. An opposing school taught that 

 the spermatozoon was the essential element in repro- 

 duction ; that the ovum simply offered a favorable soil 

 for its development, and that in the spermatozoSn of 

 Adam all mankind had been preformed. The adhe- 



re 



Days. 



Coluber 12 Badger, \ 



Hen, I „ Wolf, J - - 



Duck,/ Lion, 



Goose 29 Pig ■; 



Stork 42 Sheep 



Cassowary 65 Goat 2: 



Mouse 24 Roe 24 



Rabbit, ) „ Bear, \ 



Hare, J 3 Small apes, {''.'' 



Deer 



Weeks. Woman, 



Months. 



rents of the theory of the encasement of the male were 

 styled Animalculists. See Jncasement. 



Prefrontal { pre-f run'-tal) [pros, before; frons, fore- 

 head]. In biology: {a) the fore part of the frontal 

 region ; {b) one of the anterior cranial bones of cer- 

 tain vertebrates. 



Pregeminal {pre-jem'-in-al) [prce, before; gem inns, 

 twin]. Relating to the anterior pair of the corpora 

 quadrigemina. 



Pregeminum ( pre-jem' -in-um) [pra, before; geminus, 

 twin]. The anterior pair of the corpora quadrigemina, 

 considered as forming together a single organ. 



Pregeniculatum {pre-jen-ik-u-la'-tum) [pros, before ; 

 geniculatam, geniculate]. Same as Pregenicuhmi. 



Pregeniculum ( pre-jen-ik' -u-lum). The externa/ geni- 

 culate body, on the outer side of the corpora quadri- 

 gemina and under the back part of the optic thalamus. 

 It is characterized by the regular alternation of deeply 

 gray and white lamina. The nerve-cells in the gray 

 substance are large, multipolar, and pigmented. 



Pregenital {pre-jen' '-it-al) [pro:, before; genitalis, 

 belonging to generation]. In biology, located in 

 front of the external genital organs. 



Preglenoid {pre-gle' -noid) [pros, before; y/J/v//, pit; 

 ehhc, like]. Situated in front of the glenoid fossa. 



Preglobin {pre-glo'-bin) [pros, before ; globus, a globe]. 

 An albuminoid derivable from cytoglobin by the in- 

 fluence of dilute acids. It differs from other albumin 

 oids in being insoluble in an excess of acetic acid. 



Preglobulin ( pre-glob' -u-lin) [ pros, before ; globulus. 

 a little ball]. An albuminous body present in small 

 amount in cells, insoluble in water, soluble in a ten per 

 cent, sodium chlorid solution and a dilute alkaline 

 solution. It slightly inhibits coagulation. 



Pregnancy { preg' -nan-se) [pregnans, with child]. 

 The state of the female corresponding to the 

 ence within her body of the product of coi 

 tion ; the period from conception to delivery. It 

 delivery is protracted far beyond the normal time 

 and the ovum is dead, the condition of pregnancy 

 cannot be said to exist. The normal duration of 

 pregnancy in woman is 280 days, or ten lunar months 

 of twenty-eight days each, or nine calendar months. 

 Various methods have been devised to estimate the j 

 probable termination of pregnancy, one of which, j 

 Ely's Table, is here introduced. The period of ges- 

 tation varies in different animals, as shown in the j 

 following table : — 



PERIOD OF GESTATION OR INCUBATION (Schenk). j 



Weeks. \ 



Rat, 5 



Guinea-pig 7 



Cat, 1 o Horse, \ ,, 



Marten.J Camel, J 



Dog, ") Rhinoceros, IS 



Fox, > 9 Elephant *4 



Foumart, J 



P., Abdominal, the lodgment of the developing 

 ovum in the abdominal or peritoneal cavity ; it is 

 primary, if the fertilization take place in tin- 

 cavity, and secondary, if the embryo or ovum btttk 

 through tho enclosing walls of a tube or uterine 

 cornu into the peritoneal cavity. P., Cervical: 



