VIRCHOW'S THEORIES 



1606 



VISCUS 



the aorta. These are the principal incisions ; it is cus- 

 tomary, however, to make at least two others, viz., 

 one connecting the incision in the right auricle with 

 that in the right ventricle, and one connecting that in 

 the left auricle with the incision in the left ventricle. 

 V.'s Theory of Cellular Physiology; this is sum 

 marized in the formula, omnis cellula e cellula, i. e., 

 every cell is derived from a cell. It is the theory of 

 the hereditary succession of the cells and tissues. V.'s 

 Theory of Inflammation. See Theory. 



Virchow and Holder, Angle of. See Angle. 



Virchow-Robin Lymph-spaces. The spaces be- 

 tween the ental coats of the cerebral blood-vessels 

 and the adventitia. 



Virescence {vir-es'-ens) \_virescere, to grow green]. In 

 biology, greenness, especially a green petal or leaf, 

 normally some other color. 



Virescent {vir-es' '-ent) \yirere, to be green]. Becom- 

 ing green. 



Virgate {vir' -gat) \yirga, a rod, twig]. Straight and 

 slender, like a wand. 



Virgin {vir'-jin) [virgo ; virginis, a virgin]. A woman 

 who has never had sexual connection with a man. 

 V. -tooth, the milk-tooth of a horse not worn by 

 use. 



Virginal {vir'-jin-al) [virgo, a virgin]. Pertaining to 

 virginity. 



Virginale Claustrum {vir-Jin-a'-le klaw' -strum) [L.]. 

 The hymen. 



Virginia {inr-jin'-e-ah) [Virginia, a female name]. A 

 State of the United States. V. Creeper. See Ampe- 

 lopsis. V. Snake-root. See Serpentaria. 



Virginity {vir-jin' -it-e) [virgo, a virgin]. The condi- 

 tion of being a virgin. 



Viridescence {vir-id-es'-ens) [viridis, green]. The 

 state of being greenish. 



Viridescent {vir-id-es'-ent) [viridis, green]. Slightly 

 green. 



Viridian {vir-id'-e-an). Same as Veronese Green. 



Viridigenous {vir-id-ij' -en-us) [viridis, green ; genus, 

 producing]. In biology, producing greenness, as the 

 diatoms eaten by certain molluscs. Cf. Marennin. 



Viridin {vir'-id-in) [viridis, green]. An alkaloid ob- 

 tained from Vcratrum viride, and supposed to be iden- 

 tical with jervin. 



Viridity {vir - id '- it-e) [viridis, green]. In biology, 

 greenness. 



Virile {vir'-il) [virilis ; vir, a man]. Pertaining to 

 mature manhood. V. Member, the penis. 



Virilescence {vir-il-es'-ens) [virilis, virile]. The as- 

 sumption of male characters by an aged woman ; the 

 growth of a beard, the development of a manly voice 

 on the part of a woman after the menopause. 



Virilia (vir-il'-e-ah). Plural of Virilis, manly. The 

 male generative organs. 



Virility {vir - il'- it- e) [virilffas]. The condition of 

 mature manhood ; procreative power. 



Virose {vi'-roz) [virosns, poisonous]. Poisonous; hav- 

 ing a poisonous taste or smell. 



Virous (vi'-rus) [virosns, poisonous]. Possessing poi- 

 sonous properties. 



Virulence {vir' -u-lens) [virulentia ; virus, a poison]. 

 Malignity, noxiousness, infectiousness. 



Virulent {vir' -u-lent) [virulentus]. Having the nature 

 of a poison. See Virus. 



Viruliferous {vir-u-lif -er-us) [virus, virus ; ft'rrc, to 

 carry]. Containing or conveying a virus. 



Virus {vi'-rus) [I-]- A poison that causes a morbid 

 process or disease ; any pathogenic microbe. The 

 word was formerly applied to the specific contagium of 

 an infectious disease, especially to that of cowpox. 

 V., Attenuated, virus deprived of some of its patho- 



genic quality by culture and modification by animal 

 inoculation-experiments, so that inoculated in another 

 person or animal it preserves the same against attack 

 or the usual violence of the disease. V., Human- 

 ized, vaccine-lymph that is not taken directly from the 

 cow or calf, but from the vaccine-pustule of a human 

 being, usually a child, who may have been inoculated 

 with matter obtained from another child or from the 

 cow. V., Specific, the characteristic poison of a* 

 disease. 



Vis [L.]. Force or energy. V. conservatrix, the 

 healing power of nature. V. formativa, the energy 

 of nature as manifest in the formation of new tissue 

 to replace that which has been destroyed. V. a fronte, 

 energy exerted in front ; resistance. V. inertise, that 

 force by virtue of which a body at rest remains at rest ; 

 or, if in motion, continues in motion. V. medicatrix. 

 Same as V. conservatrix. V. plastrix, in biology, 

 growth-force. See Bathmism, Physiobathmism, Stato- 

 bathmism. V. a tergo, force applied from behind. 

 V. vitae, vital force. 



Visage {viz'-ij) [visus, a look]. The face. 



Viscera {vis'-er-ah). See Viscus. 



Viscerad {vis'-er-ad) [viscus, a viscus]. Toward the 

 visceral cavity. 



Visceral {vis'-er-al) [viscera]. Pertaining to the vis- 

 cera. V. Arches and Clefts, four slit-like depressions 

 with intermediate thickenings of the lateral wall of the 

 cervical region of the embryo. They are persistent j 

 slits in fishes. 



Visceralgia {vis ■ er-al'-je- ah) [viscus, viscus ; o 

 pain]. Pain or neuralgia in a viscus. 



Viscerate {vis'- er- at) [viscera]. To eviscerate or i 

 disembowel. 



Viscericardiac {vis-er-ik-ar'-de-ak) [viscera; ;. 

 heart]. Pertaining to the viscericardium. 



Viscericardium (vis-er-ik-ar' -de-uni) [viscera, viscera; 

 napdia, heart]. The visceripericardial sac. 



Viscerimotor {vis-er-im-o'-tor) ["discus, viscus ; / 

 motor]. Conveying motor impulses to a viscus. 



Visceripericardial {vis-er-ip-er- ik-ar'-de-al ) [r 



■Kepi, around ; Kaptiia, heart]. Common to the peri- i 

 cardium and the viscera. 



Visceropleural (7ns-er-o-plu'-ral) [viscera ; r. 

 side]. Same as neurovisceral. 



Visceroskeletal {vis-er-o-skel'-et-al) [viscera ; rr/, 

 skeleton]. Pertaining to the visceral skeleton. 



Viscid {vis'-id) [viscidus~\. Clammy; slimy; adhe- ; 

 sive ; glutinous. See Viscous. 



Viscidity {vis-id' -it-e). Same as Viscosity. 



Viscin {7us'-in) [viscum, bird-lime]. Bird-lim< 

 mucilaginous extraction of the mistletoe, / 'isctt 

 vescens, Gentian, i Intra, and other plants. 



Viscose {vis'-koz) [viscum, bird-lime]. A gumi 

 cretion or product of the Micrococcus viscosus. 



Viscosity {vis-bos' -it-e) [idscositas]. The proper! 

 glutinousness, ropiness, or tenacity. 



Viscous {vis'-kus) [viscosus"]. Glutinous, ropy, - 

 Also, pertaining to a viscus or internal organ. 



Viscum {vis'-kum) [I,, -gen., Vis,/]. Mistletoe. 

 leaves and stems of V. album, the European, and ' 

 Jlavescens, the American, species. It contains . 

 cilage, viscin, bird-lime, and various other c\tr. 

 In large doses it induces vomiting and pur] 

 The American plant has alleged properties similar tij 

 those of digitalis. Dose gr. x-.qj.in de< 

 a 10 per cent, tincture TT\v-xxx. (Jnof. 



Viscus {vis'-kus) [L. : //., Viscera]. An; 



closed within either of the four great cavities, tfl 

 cranium, thorax, abdominal cavity, or pelvis ; 

 brain, intestine, spleen, bladder, uterus, lungs, Hvei 

 etc. 



