MEDULLA 



353 



ME LI A 





Medulla. ( See Illus. Diet.) 3. The preferred term 

 for centrum ovale (of Yieussens). 4. The pith or 

 parenchyma of a plant. 



Medulladen {med-uI-aeP-ai). A preparation of bone- 

 marrow of beef; it is used in anemia, gout, etc. Dose, 

 3°-45 gr- (2-3 gm.). 



Medullic 1 med-ul'-ik). Relating to or derived from 

 marrow or the pith of a plant. 



Medullose, Medullous {med-ul'-os, -us). Containing 

 much pith or marrow. 



Megacaryocyte, Megakaryocyte [meg-ah-kar' -e-o-sit) 

 [tie-^nc, large; mpvov, a kernel; Kiroq, cell]. See 

 My'eloplax (Illus. Diet.). 



Megacoly meg-aif-ol-e). See Megalocoly. 



M egalanthropogenesia, Megalanthropogenesis 



{meg-al-an-thro-po-jen-e'-ze-ah, -jen'-e-sis) [uiyac, 

 large; avttpu—oz, man; ybmtmr t generation]. Robert's 

 term for the production of men of fine physical and 

 mental endowment by means of suitable marriages. 



Megalgia [meg-al'-je-ak) [ui^aq, large; a/^oc, pain]. 

 Excessively severe pain. 



Megallantoid {meg-al-an'-toid) [</£} ac, large ; allan- 

 tois\ I. Having a large allantois. One of the Meg- 

 allantoids (Milne-Edwards), animals distinguished by 

 the persistence and large size of the allantoic sac. 



Megaloblast. (See Illus. Diet.) The term is restricted 

 to embryonic or germinal cells as distinguished from 

 megalocyte, which pertains to adult life. 



Megalocoly (meg-al-ok' -ol-e) [ui }ag, large ; ko/ov, 

 colon]. A uniform increase in the internal diameter 

 of the colon with thickening of the walls. Syn., 

 Megacoly. Cf. Macrocoly. 



Megalocytosis \meg-al-o-si-t(/ -sis) [ui-.aq, large ; kj'toc, 

 cell]. The presence of large numbers of greatly en- 

 larged erythrocytes in the blood. Syn., Macrocytosis. 



Megalogamete {meg-al-o-gamf-it). See Macrogamete. 



Megalogastria {meg-al-o-gas' -tre-ah). Same as Mcga- 

 ia or Macrogastria (Illus. Diet.). 



Megalonychosis {meg al-on-ik-e/sis) [uh,ac, large ; 

 -. nail]. Universal noninflammatory enlargement 

 of the nails. 



Megalopenis {meg-al-o-pe' -nis). Excessive size of the 

 penis. 



Megaloporous {meg-al-opZ-or-us). Characterized by 

 large pores. 



Megalosyndactyly {meg-al-o-sin-dak'-til-e). Syndac- 

 tylism attended by hypertrophy. 



Megarrhin {meg-ar'-in) [juyae, large; pun, root]. A 

 body obtained by Young from Echinocystis fabacea, 

 Torr. , resembling saponin and causing dilation of the 

 pupil. 



Megarrhizarrhetin {meg-ar-iz-i-ar-etf-in). A resinoid 

 substance obtained by boiling megarrizin in dilute 

 acids. 



Megarrhizin {meg-ar-tY-in). A bitter glucosid isolated 

 by T. P. Heany from root of Echinocystis fabacea, 

 Torr., manroot, a cucurbitaceous plant of North 

 America. It is said to be an active cathartic. 



Megarrhizitin meg-ar-iz'-it-in). A resinous body found 

 in Echinocystis fabacea, Torr. 



Megascope [meg / -ah-skdp). See Episcope. 



Megascma {meg-ak-so f -mak ) [«f;ac, large; aioua, 

 body]. Abnormal size and stature not reaching 

 gigantism. 



Megastria ( meg-as' -tre-ah}. See Megagastria (Illus. 

 DictA 



Megophthalmus {meg-of-thal' '-mus). See Keratoglobus 

 (Illus. Diet.). 



Megoxycyte {me^-ok'-se-sit) [ub/ar, large; of if. 

 sharp; m roc, cell]. A megoxyphil cell, one of the 

 coarsely granular eosinophil cells or tf-granulation cells 

 of Ehrlich. See under Color Analysis. 

 2; 



Mel. (See Illus. Diet.) M. acetatum, oxymel. M. 

 aere. M. aereum, Alhagi manna. M. roscidum, 

 manna. 



Melachol [mel'-ak-ol). Sodium citrophosphate con 

 sisting of sodium phosphate, 100 parts ; sodium ni- 

 trate, 2 parts ; citric acid, 1 3 parts, rubbed together 

 and mixed with 100 parts of water ; used in liver com- 

 plaints. 



Melagra. (See Illus. Diet.) M. parturientium. 

 See Lochbmeleagra 1 Illus. Diet.). 



Melalomic, Melalomous ymel-al-o'-mik, -its) [ut/ac, 

 black ; /uua, a fringe]. In biology, furnished with 

 black fringes. 



Melambo {me-lam'-bo). See Wintera (Illus. Diet.). 



Melampyrin. Melampyrit {mel-am'-pi-rin, -rit) [J/cl- 

 ampvra, a genus of plants]. See Dulcit (Illus. 

 Diet.). 



Melan. See Melon. 



Melancholia, (^ee Illus. Diet.) Syn.. Melancholic 

 madness; Hypochondriasis; Vapors ; Affectus melan- 

 cholicus ; A prarcordalis. See Sign, Schii-'i' ;. M., 

 Active, M., Acute. M. activa, M. acutissima, 

 that form marked by restless wandering influenced by 

 delusions, hallucinations, and anxiety. M., Affective, 

 that in which the emotional nature is at fault. M., 

 Demonophobia. See Demonomania (Illus. Diet). 

 M., Diabetic, that attributed to diabetes. M., Or- 

 ganic, that associated with gross organic lesion of the 

 brain. M., Panphobic, that associated with the 

 dread of everything. M. passiva, M., Passive, a 

 chronic form of slow development and gradual failure 

 of the physical powers. M., Recurrent, that char- 

 acterized by alternating recovery and relapses. M., 

 Sympathetic, that dependent upon organic disease 

 other than that of the brain. M. transitoria sim- 

 plex, extreme mental depression with suicidal im- 

 pulses of sudden onset and limited duration. 



Melanidrosis {n/el-an-id-ro'-sis) [ui /.ac, black ; lApwc, 

 sweat]. See Mclanephidrosis (Illus. Diet.). 



Melanoplakia ymel-an-o-pla' -ke-ah ) [ut'/ac, black ; 

 - 5, anything flat or broad]. Pigmentation of the 

 mucous membrane of the mouth. 



Melanosarcomatosis {mel-an-o-sar-ko-mat-o'-sis). 



The condition favoring the formation of melanosar- 

 comas or the formation of them. 



Melanosis. (See Illus. Diet.) M. of the Intestine, 

 a black discoloration about the periphery of the lymph- 

 nodes, or more rarely involving the entire villi, en- 

 countered in chronic intestinal catarrh. Ger. Zotten- 

 melanose. 



Melanthera {mel-an' -ther-ah) [ui'/.aq, black; aiStjp6c y 

 blossoming]. A genus of composite plants. M. 

 brownei, Sch., a species of tropical Africa ; the leaves 

 in infusion are recommended as a substitute for quinin. 



Melanthin (nnl-an'-thin). C w HjjO- (?). A toxic 

 glucosid from the seeds of A'igella sativa, L. It crys- 

 tallizes from alcohol in needles almost insoluble in 

 water or ether. 



Melassate (wel-as'-at). A salt of melassic acid. 



Melezitase (mel-e-zi'-tdz). A ferment which hydro- 

 lyzes melezitose. 



Melia [me'-le-ah) \jakla, the ash-tree, on account of 

 the similarity of its leaves]. A genus of the order 

 Me'iiicetc. M. azadirachta, L., Indian elder, lilac 

 of China, indigenous to Asia but naturalized in south- 

 ern Europe and America. The entire plant is bitter 

 and narcotic, in small doses purgative and anthelmin- 

 tic ; the leaves and blossoms are vulnerary and stom- 

 achic ; the bark, called mangrove, is tonic and emmen- 

 agog ; the root bark, known in India as bewinamara, 

 margosa, isa-bevu, nim, gori, is used in lepra and 

 scrofula and as an emetic ; the oil of the seeds ( mar- 



