DORSI-MESON 



395 



DOURINE 



middle]. Pertaining to the dorsimeson. See Posi- 

 tion and Direction, Table of. 



Dorsi-meson (dor-si-me' -son) [dorsum, the back ; 

 fieaov, the middle]. The dorsal edge of the meson or 

 median plane of the body. The dorsal, mesal, or 

 median line. Cf. Ventrimesoti ; also Position and Di- 

 rection, Table of. 



Dorsiparous (dor-sip' -ar-us) [dorsum, the back ; parere, 

 to produce]. Applied to plants that bear fruit on the 

 back of the leaves (ferns), or animals hatching young 

 upon the back (toads). 



Dorsi-scapular (dor-si-skap / -u-lar) [dorsum, back ; 

 scapula, the shoulder]. Relating to the dorsum of 

 the scapula. 



Dorso- (dor' -so-) [dorsum, back]. A prefix used in 

 connection with the names of such organs as have 

 their attachment to or about the back. 



Dorsocephalad (dor-so-sef -al-ad) [dorsum, back; 

 KEoa/.r/, head]. Toward the dorsal aspect of the head. 



Dorsodynia (dcr-so-din' -e-ah) [dorsum, back; bSvvr), 

 pain]. Omodynia ; scapulodynia ; pain in the dorsal 

 region ; rheumatism of the muscles of the shoulders 

 and upper back. 



Dorso-lumbar (dor-so-lum'-bar) [dorsum, back; lum- 

 bus, loin]. Relating to the back and the loins. 



Dorso-sacral Position. See Postures, Table of. 



Dorso-thoracic (dor-so-tho-ra' -sik) [dorsum, back ; 

 dupai;, thorax]. Relating to the back and the thorax. 



Dorstenia (dor-ste' -ne-ak). See Contrayerva. 



Dorsulum (dor'-su-lum) [dim. of dorsum, the back]. 

 The second dorsal sclerite of the thorax in certain 

 insects. 



Dorsum (dor* -sum) [L.]. I. The back. The rounded 

 part of the back. 2. Any part corresponding to the 

 back ; as the dorsum of the foot, hand, tongue, scap- 

 ula, or penis ; in many cases, the upper surface is thus 

 designated. 



)orsumbonal [dor-sum' -bo-nal) [dorsum, the back ; 

 umbo, a boss]. In biology, pertaining to both the 

 dorsal and umbonal regions in a bivalve mollusc. 

 )osage (do'-sdj) [dooic, a portion given]. A system or 

 method of dosing. See Posology. 



Dose (dos) [docic, a portion]. The measured portion 

 of medicine to be taken at one time. D., Divided, 

 a mode of administration in which a drug is to be 

 taken in fractional portions at short intervals. D., 

 Maximum, the largest portion of medicine ordered 

 to produce a given result, or the largest dose consist- 

 ent with safety. In this work both minimum and 

 maximum dosage is given under each medicine or 

 preparation. D., Minimum, the smallest quantity 

 of a medicine that will produce physiologic effects. 



GAUBIUS' TABLE 

 Of Proportion of Dose According to Age. 

 For an adult, suppose the dose to be . . i, or 60 grains 

 An individual under 1 year will require rV. " 5 



" 2 vears " " J, " 8 " 

 " 3 " " " i. " 10 " 



" 4 " " i. 15 



" 7 " " " J, " 20 



" 14 " * " i, 3° 



" " 20 " " " j, " 40 



For one of 21 to 60, the full dose, or . . 1, " 60 " 

 Above this age, an inverse gradation must be observed. 



Dosimeter (do-sim'-et-er) [Soaic, a dose ; uerpov, a 

 measure]. A drop-meter ; an instrument for measur- 

 ing minute quantities of, a liquid. 



osimetric (do-sim-et' -rik) [66aic, a dose ; ukrpov, a 

 measure]. Relating to or characterized by dosimetry, 

 osimetry (do-sim'et-re) [Socic, dose ; fierpov, a 

 measure]. The accurate and systematic measurement 

 of a dose or prescribed portion ; the use of drugs in 

 exact and definite doses. 



Dosiology, or Dosology (do-se-ol'-o-je, or do-sol' -o-je) 

 [doaic, dose ; 'f-6yoc, science]. Posology; the science 

 of doses. 



Dosis (do'-sis). See Dose. 



Dossil (dos'-tl) [ME., dosil, a spigot]. A pledget or 

 tuft, as of lint. 



Dotage (doi'dj) [ME., dotren\. Feebleness of mind; 

 senility. 



Dothienenteritis, or Dothinenteritis (doth-e-en-en-ter- 

 i'-tis, or doth-in-en-ter-i' -tis) [dodiifv, a boil ; tvrepov, 

 bowel ; inc, inflammation]. Enteric fever, or the en- 

 teritis that accompanies it. 



Double (dub' -I) [ME., doublen, to double]. Two-fold. 

 In pairs. D. Athetosis, a manifestation of infantile 

 spastic paraplegia. D. Chin. See Buccu/a. D. 

 Consciousness, periodic amnesia ; a periodic failure 

 of memory involving all the intellectual functions and 

 the character of the individual ; that condition in which 

 a patient seems to have two distinct but alternating 

 lives ; it is seen mostly in somnambulists and hyp- 

 notics. D. Flap Amputation. See Amputation. 

 D. Hearing. See Diplacusis. D. Monsters. Same 

 as Composite Monsters, q.v. D. Personality, an ab- 

 normal condition in which the subject feels as if he 

 were two distinct personalities, the one alternating con- 

 tinually with the other. It is a symptom of insanity 

 and of poisoning by certain drugs. D. Staining, in 

 microscopy, the impregnation of a structure with two 

 colors in order to show its details. Bacteriologically 

 the application of such staining-reagents as will stain 

 the spores one color and the rods another. D . Touch, 

 the exploration of the vaginal and rectal walls by insert- 

 ing the thumb into the one cavity, and the index fingei 

 into the other, so that, e.g., the presence of any abnor- 

 mal growth may be ascertained. D. Vinegar. See 

 Vinegar. D. Vision. See Diplopia. D. Vitriol, 

 a mixture of copper and iron sulphates crystallized 

 together. D. Voice. See Diphthongia. D. Wedge, 

 an instrument used in dentistry for removing an 

 artificial crown from the root of a tooth upon which 

 it has been set. 



Doubler (dub / -ler). See Doubling. 



Doublet (dub* -let) [ME., dublet\ In optics, a sys- 

 tem consisting of two lenses. 



Doubling (dub'-ling) [ME., doublen, to double]. A 

 term given to that duplication of dispensary statistics 

 that results from patients coming twice or oftener with 

 different troubles in the course of a year. Such patients 

 are termed ■ ' doublers. " 



Doubly (dub'-le) [ME., doublen, to double]. In a 

 two-fold manner. D. Contoured, in microscopy, an 

 object is doubly contoured when it is bounded by two, 

 usually parallel, dark lines with a lighter band between 

 them. 



Doubt (dowt) [ME., doute, fear]. Uncertainty; fear. 

 D., Insanity of, mental disorder in which the 

 patient is affected by morbid doubts and fears, and sub- 

 jects himself to introspective questionings. 



Doubting (dowt'-ing) [ME., doute, fear]. Fearing. 

 D. Mania, a form of volitional disorder in which 

 the reflexive mechanism of the will is over-irritable 

 and reacts to slight stimuli, producing a constant suc- 

 cession of contradictory, absurd, or useless acts. 



Douche (doosh) [Fr.]. A stream of water directed 

 against a part, or one used to flush a cavity of the 

 body. 



Douglas's Cul-de-sac or Pouch. See Pouch. D. 

 Line. See Lines, Table of. D. Semilunar Fold, 

 a thin curved margin that forms the lower part of the 

 posterior wall of the sheath of the abdominal rectus 

 muscle. 



Dourine (doo'-rin) [Fr.]. Syphilis in the horse. 



