MESOSTERNAL 



752 



METACARPEN 



to the simpler end-products of the katabolic processes. 

 Those metastates formed in the " ascending staircase " 

 — synthetic or anabolic — are called Anastates. Those 

 of the descending staircase — analytic katabolic — are 

 called Catastates. See Anabolin, Katabolin, Mctabolin. 



Mesosternal {mes-o-sler'-nal) [peoog, middle; orepvov, 

 breast-bone]. Pertaining to the mesosternum. 



Mesosternebra {mes-o-ster' -neb-rah) \_picoc, middle ; 

 sternebra, sternum]. Any sternebra that helps to 

 make up the mesosternum or its homologue in any lower 

 animal. 



Mesosternum {mes-o-ster' '-mini) \_/ieaog, middle ; arip- 

 vov, the sternum]. I. In biology, the large ventral 

 sclerite of an insect between the legs of the second 

 thoracic segment. 2. The gladiolus, or second piece 

 of the sternum. 



Mesostethium {mes-o-ste' '-the-uni) \jieaog, middle ; 

 OTTjOiov, dim. of orr/dog, the breast: pi., Mesostethia~\. 

 In biology, the large ventral sclerite of an insect be- 

 tween the bases of the middle and posterior legs ; the 

 metasternum. 



Mesosthenic {mes-o-sthen' ' -ik) \_fieaog, middle ; odevog, 

 strength]. Having a moderate degree of muscular 

 force. 



Mesostomatous {mes-o-sto' -mat-us), Mesostomous 

 {mes-os' '-to-mus) [fieoog, middle ; ardfia, mouth]. 

 Having the mouth situated in the middle of the body. 



Mesostylous {mes-o-sti' '-his) \jiiaog, middle; crvAog, a 

 pillar]. In biology, having styles of intermediate 

 length in heterostyled plants. 



Mesotarsal {mes-o-tar'-sal). Synonym of AfediotarsaL 



Mesotarsus {mes-o-tar'-sus) [pecrog, middle; rapaog, 

 any broad, flat surface : //. , Mesotarsi~\. In biology, 

 the tarsus of the middle or second leg of a hexapod 

 insect. 



Mesothelioma {mes-o-the-le-o' -mah) \_pecog, middle ; 

 QrfA.ii, nipple ; bpa, a tumor]. A variety of epithe- 

 lioma supposed to be developed from the mesoblast. 



Mesothelium {mes-o-the'-le-um) \jiiaog, middle ; drfArj, 

 the nipple]. In biology, an epithelial arrangement 

 assumed by the mesodermic cells which bound the 

 cavities formed in the mesoderm of a metazoan em- 

 bryo ; the peritoneal epithelium. 



Mesothenar {mes-o-the' -nar) [//ectoc, middle ; t)i:vap, 

 palm]. The muscle drawing the thumb toward the 

 palm of the hand ; the adductor pollicis. 



Mesothermal {mes-o-ther' '-mal) [ptaog, middle ; Oeppn, 

 heat]. Of medium warmth. 



Mesothoracotheca {mes-o-tho-rak-o-the'-kah) \_peoog, 

 middle ; ffupa^, chest; Or/nr/, a case : pi., Mesotho- 

 racothecaf\. In entomology, that portion 1 of a pupa- 

 case covering the mesothorax. 



Mesothorax {mes-o-tho' '-raks) [pioog, middle; Oupn^, 

 chest]. In entomology, the second or intermediate 

 segment of the thorax of an insect ; to it are joined 

 the second pair of legs and the first pair of wings. 



Mesotic {mes-ot'-ik) [peo-orr/g, the middle]. Pertain- 

 ing to, or affecting, the median or parenchymatous 

 tissues. 



Mesotocatarrhus {mes-ol-o-kat-ar' -us) \_peo~og, middle ; 

 ovg, ear ; Karappog, catarrh]. Catarrh of the middle 

 ear. 



Mesotcechitis {mes-o-te-ki'-tis) [pecoroixoc, dividing 

 wall ; trig, inflammation]. Inflammation of the meso- 

 Uechium. 



Mesotcechium (mes-o-te'-ke-um) [hegotoi xog , dividing 

 wall]. The mediastinum. 



Mesotomic (mes-o-tom'-ik) \jikaog, middle; roprj, a 

 cutting]. Pertaining to mesotomism. 



Mesotomism {mes-of -o-mizm) [piaog, middle; ro/if), a 

 cutting]. The process of separating optically opposite 



Mesotrocha {mes-of -ro-kah) [peoog, middle ; 86pa!-, 

 chest]. In embryology, that form of verniian and 

 molluscan larva in which one or two rows of cilia are 

 present in the middle of the body, and the character- 

 istic telotrochal rings are absent. Cf. Atrocha, Mono- 

 trocha, Telotrocha, Polytrocha, Nototrocha, Gastero- 

 trocha, Amphilrocha, Actinotrocha, Trochophora. 



Mesoturbinal {mcs-o-ter' -bin-al) [peaog, middle ; turbo, 

 a wheel]. The lower part of the ectethmoid, over- 

 hanging the middle nasal meatus. 



Mesotympanic {mes-o-tim-pan'-ik) [pioog, middle ; 

 Tv/inavov, a drum]. See Symplectic. 



Mesovarium {mes-o-va' -re-um) [uioog, middle ; ova- 

 rium, ovary]. A peritoneal fold connecting the ovary 

 to the broad ligament. 



Mesoventral {mes-o-ven'-tral) \_peo~og, middle; venter, 

 belly]. Both median and ventral. 



Mesoxalic Acid {mes-oks-al'-ik) \jiiaog, middle; oza'/ir, 

 sorrel], C 3 H 2 5 -f- H 2 0. A crystalline acid obtained 

 in several ways from alloxan and from amidomalonic 

 acid. 



Mesoxalylurea {mes-oks-al-il-u' -re-ah). Same as Al- 

 loxan. 



Mesozoa {mes-o-zo' '-ah) [peaog, middle ; C,Ctov, animal]. 

 A class of animals intermediate between the protozoa 

 and the metazoa. 



Mesquite fines' -kit). See Mezquite. 



Mestica {mes'-tik-ah). Same as Cochineal. 



Mestome {mes'-tom) [peoru/w:, fulness]. In biology, 

 that portion of a fibrovascular bundle which is essen- 

 tially conductive, as distinguished from the supporting 

 tissue, stereome. 



Meta- {met'-ah-) [pera, among or between]. A prefix 

 signifying over, beyond, among, between, change, or 

 transformation. For many meta- organic compounds 

 see the corresponding words without the prefix. 



Meta-acetphenetidin {met-ah-as-el-fcn-et'-id-in). See 

 Phenacetin. 



Metabasis {met-ab' -as-is) \_pna, over ; /3alveir, to go]. 

 Any radical change in a disease. Also, a change in 

 the treatment of a disease. 



Metabole {met-ab' -o-le). Synonym of 'Metabolism; 

 also of Metabasis. 



Metabolia {met-ab-o' -le-ah). Synonym of Metabo- 

 lism . 



Metabolic {met-ab-ol'-ik) [_perafioAr/, change]. Pertain- 

 ing to metabolism. M. Equilibrium, the equality 

 between the absorption and assimilation of food, and 

 the excretion of effete or end-products. 



Metabolin {met-ab' -o-lin) \_uzra$a7J], change]. A pro- 

 duct of metabolism; a metabolite or mesostate. 



Metabolism {mtt-ab'-o-lizm) [prrajo'/i;. change]. A 

 change taking place in the intimate condition oi 

 whereby their molecule becomes more complex or 

 contains more force — anabolism — or less complex — 

 katabolism. The former process is also called con- 

 structive or synthetic metabolism, the latter. 

 metabolism. The power that organized bodies p 

 of continually using up and renewing the matter com- 

 posing the body. 



Metabolite {met-ab' -o-lit) [peTa;h/>/, change]. 

 product of metabolic change ; any mesostate. 



Metabolize {met-ab' -o-l\z) \jiuafioki), change]. To 

 transform by means of metabolism. 



Metabolous {met-ab' -o-lus). Synonym of Metal 



Metaboly (met ab'-o-lc) [perajioAii , laterals, 

 change, exchange]. Same as Metabolism. 



Metacarpal (met-ak-ar'-pal) [ueraKcipnioi-. wrist]. Pw 

 taining to the metacarpus, or to any bone ot the 

 metacarpus. 



Metacarpen {met-ak-ar'-pen) [perai«ip~iov, wrist]. 

 Belonging to the metacarpus in itself. 



