MERYPERTROPHY 



748 



MESITOL 



Merypertrophy (mer-ip-er' '-tro-fe) \jiepoq, part ; vizep, 

 over; Tpocpi/, nourishment] . Partial hypertrophy. 



Merz System. A system in use for the disposal of 

 garbage and refuse, by which the waste material is 

 subjected to a process akin to desiccation. See Sew- 

 age, Disposal of 



Mesad (mes / -ad) [peaoq, middle ; ad, to]. Toward 

 the mesial or mesal line or plane ; toward the meson. 



Mesal (ines f -al) \_peooq, the middle]. At or in the 

 direction of the meson or median plane of the body. 

 Compare the opposite, lateral. Also, see Position and 

 Direction, Table of. 



Mesallantoid (mes-al-an' -toid) [jieooq, middle ; a?.7<Av- 

 ruiQ, allantois]. An animal having a small allantoic 

 sac. 



Mesameboid (mes-am-e / -boid) [peooc;, middle ; apoLpMj, 

 a change ; elSoq, shape]. In embryology, any one 

 of the leukocytes or wandering-cells, or perhaps the 

 embryonic red blood-cells or the marrow-cells. 



Mesaraic (mes-ar-a / -ik) [peaog, middle; dpaid, belly]. 

 Same as Mesenteric. 



Mesaraion [ines-ar-a' f -e-on), Mesareum (mes-ar-e'- 

 nm) \_pecapaiov, the mesentery]. The mesentery. 



Mesarteritic (mes-ar-ter-if '-ik) \jieaoq, middle ; aprripia, 

 artery ; itic, inflammation]. Pertaining to or result- 

 ing from mesarteritis. 



Mesarteritis (mes-ar-ter-i'-tis) [pecoc, middle ; aprr/pia, 

 artery ; trig, inflammation]. Inflammation of the 

 middle coat of an artery (usually chronic). 



Mesaticephalic (mes-at-is-efal' '-ik) [fieaorr/g, median ; 

 netyakii, head]. Pertaining to Mesaticephalus. Also, 

 see Index. 



Mesaticephalus (ines-at-is-ef -al-ns) [peooTijq, median ; 

 K£<j>aAr], head]. In craniometry, a term applied to a 

 skull having a cephalic index of between 75 and 79. 



Mesatipelvic (ines-at-ip-el f -vik) \_pea6rijc, median ; 

 77f/„/ic, pelvis]. A term applied to a pelvis whose in- 

 dex ranges between 90 and 95 °. 



Mesauchenous {mes-aw' '-ken-ns) [peaoq, middle ; 

 avxvv, neck]. Lissauer's term for a skull in which 

 the angle formed between the radius fixus and a 

 line joining the inion and the basion is between 26 

 and 38 . 



Mesectoderm (mes-ek' '-to-derm) Tuiaof, middle ; knroq, 

 outside ; fieppa, skin]. The ectal or ectodermal divi- 

 sion of the mesoderm ; also, indifferent tissue from 

 which both ectoderm and mesoderm are developed. 



Mesembryo (mes-em / -bre-o) \_peaoq, middle ; epjipvov, 

 embryo]. The blastula stage of the ova of meta- 

 zoans. 



Mesembryonic {mes-em-bre-on' '-ik) [fieaoc, middle ; 

 euftpvov, embryo]. Pertaining to the mesembryo. 



Mesencephal (mes-en-sef-al). Same as Mesencephalon. 



Mesencephalic {tnes-en-sefal f -ik) \jieaoq, middle ; 

 iyKt(f>a?Mv, the brain]. Relating to the mesenceph- 

 alon. 



Mesencephalon (ines-en-sef -al-oti) \jieaoq, middle ; 

 iyKztyakov, the brain]. One of the divisions of the 

 brain, consisting of the corpora quadrigemina, and the 

 crura cerebri. 



Mesenchyma (mes-eng f -kim-ah) [iiegoc, middle; b/xvpa, 

 an infusion]. The portion of the mesoderm that 

 produces all the connective tissues of the body, the 

 blood-vessels, and the blood, the entire lymphatic sys- 

 tem proper, and the heart. The non-epithelial portions 

 of the mesoderm. 



Mesenchyme (fines' -en-klin) [///<roc, middle ; iyxvpa, 

 an infusion]. In biology : (a) applied to the meso- 

 derm of certain animals (e.g. , sponges) ; (b) embryonic 

 connective tissue composed of cells thrown off by the 

 mesothelium. 



Mesencranus [mes-en-kra' '-nus) [ukcoc, middle ; ev, 



in ; upaviov, skull]. Lissauer's term for a skull hav- 

 ing a median cerebellar sector of from 15 to 20 . 



Mesenteric (mes-en-ter'-ik) [peoevTepiMc, from 

 middle ; evrepov, intestine]. Pertaining to the 

 entery. 



Mesenterica (mes-en-ter / -ik-a/i) \jieaoq, middle 

 rupov, intestine]. I. The mycelium of certain n 

 2. A vessel of the mesentery. M., Tabes. See 



Mesenteriitis (7/ies-en-ler-e-i' '-tis) . Same as Mesenteritis 



Mesenteriolum {mes-en-ter-i f -o-luin)\fi\\\\. ofueah 



mesentery]. A little mesentery ; especially the fold 

 of peritoneum that sometimes connects the appendix 

 vermiformis with the mesentery. 



Mesenteriophthisis (mcs-cn-ter-c-off'-!kis-is) [ 

 repov, mesentery ; (btiiGiq, wasting]. Tabes mesen- 

 terica, q. v. 



Mesenteritic (mes-en-ter-if '-ik) \_iuaoc, middle ; evrepov, 

 intestine ; itlq, inflammation]. Pertaining to or 

 affected with mesenteritis. 



Mesenteritis [mes-en-ter-i'-tis) \_peaoq, middle; ev- 

 an intestine ; itic, inflammation]. Inflammation of the 

 mesentery. M. chronica. Synonym of Tabes mes- 

 enterica. 



Mesenterium (mes-en-ter'-e-tim) [L.://., Mesenterial. 

 A mesentery. 



Mesenteroid (tnes-en' '-ter-oid) [peaevrepiov, mesentery; 

 elJoc, like]. Resembling the mesentery. 



Mesenteron (mes-en / -ter-on) \_peaog, middle ; evrepov, 

 intestine]. The middle portion of the alimentary 

 tract in the embryo. 



Mesentery (ines'-en-ter-e) \jiecoq, middle ; evr 

 bowel]. I. A fold of the peritoneum that con- 

 nects certain portions of the intestine with the posterior 

 abdominal wall. 2. A membranous septum dividing 

 the perivisceral cavity into more or less completely 

 separate chambers. 



Mesentoderm, Mesendoderm [tnes-en' '-to-derm, »ies- 

 en' ' -do-derm) \_peaoq, middle ; evroq, within ; 6, 

 skin]. The ental or entodermal division of the 

 mesoderm ; also, the indifferent tissue from which 

 both entoderm and mesoderm are developed. 



Mesepimeron (mes-ep-im / -er-on) [peooc, middle 

 upon ; p-ijpoc;, thigh : //., Mesepimera']. In biology, 

 the middle lateral piece (epimeron) of the thorax or 

 mesothorax of an arthropod. 



Mesepisternum (mes-ep-is-ter' '-num) [fieaoQ, middle ; 

 kwi, upon; aripvov, breast: pi., Mesepisterna~\. In 

 biology, one of the anterior lateral pieces of the meso- 

 thorax of an arthropod. 



Meseraic [mes-er-a / -ik). See Mesaraic. 



Mesethmoid {mes-eth'-moia) \_ueooq, middle; 



ethmoid]. The mesal element of the ethmoid bone, 

 forming a separate bone in some of the lower 

 animals. 



Mesh [ME., maske, a mesh, or net]. A netwoi 

 of vessels or nerves. 



Mesiad [rues' '-e-ad) \jxeaoq, middle]. Same as Mesad. 



Mesial (mes / -e-al) [fieaoc, middle]. Same as J/ 



Mesicerin (mes-is-e / -rin) [fieoiTT/c, a mediator ; cera, 

 wax], C 6 H ;t (CH !! .OH) 8 . Mesitylene glycerol, pro 

 duced by the action of tribrom-mesitylene upon boiling 

 water and lead carbonate. It is a thick liquid. 



Mesidic Acid [mes-id'-ik). See Uvitic Acid. 



Mesien (mes / -e-en) [piooc, middle]. Belonging to the 

 mesion in itself. 



Mesion {rues' -e-on) [peaoc middle]. See Meson. 



Mesiris [mes-i'-ris) [peaoc, middle ; tpir, iris]. The 

 middle layer of the iris, lying between the ectiris and 

 the entiris. 



Mesitilol {mes-i/'-il-ol). Same as Mesitylene. 



Mesitol [mes'-it-ol) [mnirr/c, a mediator], C 9 H„0. A 

 crystalline body, chemically a hydrated mesitylene. 



