METAXOTUM 



Iandum (met-an-o / -turn) [uerd, behind ; v<l>rm\ the 

 ck: //., Metanota\ In biology, the third and last 

 jment of the notum, or dorsal part of the meta- 

 thorax of an insect. 

 Metaparapteron (met-ap-ar-ap' -ter-on) [uerd, with ; 

 . beside ; -repov, wing://., Melaparaptera\ In 

 biology, the third sclerite in the metapleuron of an 

 insect. 

 Metapedium (met-ap-e / -de-um). Synonym of Meta- 

 tarsus. 

 Metapeptone (met-ap-ep / -tdn) [uerd, beyond; irhbig, 

 digestion]. A substance obtained by Meissner from 

 the fluid resulting from the acid peptic digestion of any 

 proteid after the parapeptone had been removed. The 

 ter having been removed by filtration, to the filtrate 

 as added some acid, and a precipitate was secured, to 

 hich was given the foregoing name. Meissner further 

 ribes a residue insoluble in dilute acids, but solu- 

 e in dilute alkalies, that made its appearance during 

 e digestion of casein, and to this he gave the name 

 dyspeptone. Metapeptone is said to be intermedi- 

 ate between parapeptone and dyspeptone. 

 Metaphases (rnet-af-a f -zis) [uerd, after, following ; 

 ydoic, a phase]. In biology, the final phase or set of 

 phenomena of karyokinesis, from the division of the 



Mucleai fibrils to the separation of the daughter-nuclei. 

 Strasburger. ) Cf. Anaphases, Prophases. 

 ■Xaphenylendiamm^met-af-en-il-en-di'-am-in) [uerd, 

 beyond; phenylendiami>i\. A base similar in action 

 to the toxic ptomains, quickly producing death in ani- 



«ials, preceded by ptyalism, vomiting, diarrhea, and ex- 

 :ssive urinary secretion. See Paraphenylendiamin. 

 taphery (met-a^ -er-e) [perd, over; Qepeiv, to carry]. 

 In biology, the transposition or displacement of 

 floral organs. 



Metaphlogosis (met-af-lo-go'-sis) [perd, beyond; 

 'jjgic, a burning]. Severe inflammation with 

 much engorgement, but of short duration. 



Metaphosphoric Acid (met-af-os-for / -ik)[perd, beyond; 

 phosphorus"]. See Acid, Phosphoric. M. Test for 

 Albumin. See Tests, Table of . 



Metaphrenon (met-af -ren-on) [uerd, beyond ; Oprjv, 

 diaphragm]. The space between the shoulders. 



Metaphysical {mct-af-iz'-ik-al) [uerd, after; owned, 

 physics]. Of or pertaining to metaphysics. M. 

 Mania, doubting insanity. M. School, a name as- 

 sumed for an alleged system of medicine; the so- 

 called mind-cure. 



Metaphysician (met-af-is-ish' -an) [uerd, after; ovcuta, 

 physics] . A term that has been applied to one who 

 practises the mind-cure. 



Metaphysicist (met-af-iV-is-ist). Same as Metaphysi- 

 cian. 



Metaphysics (met-af-iz'-iks) [uerd, beyond; ovate, 

 nature]. That science which includes the investiga- 

 tion and discussion of the nature of mind and all 

 supersensible phenomena. M., Medical, the con- 

 sideration of the essential nature and cause of disease. 

 The philosophy of disease. 



■Metaphysis (met- af -is-is). Synonym of Metamor- 

 Metaplasia (met-ap-la'-ze-ah) [uerd, beyond ; Tr/daoeiv, 

 to form]. A transformation of a tissue into another 

 without the intervention of an embryonal tissue. It 

 occurs only among tissues closely related, and is most 

 common in the connective tissues. Fibrous tissue 

 may be transformed directly into bone, myxomatous 

 into adipose tissue. Metaplasia occurs also in epithe- 

 lium. 



^etaplasis f uiet-ap' -las-is) [uerd, over ; -r/daic , forma- 

 tion]. Fulfilled growth and development seen in the 

 stage between anaplasis and cataplasis. 



755 METASPOXDYLUM 



Metaplasm (met , -ap-lazm) [fierd, beyond ; — /.doua, 

 molded material]. In biology, the name given by 

 Hanstein to the granular substances mingled with pro- 

 toplasm. Properly, protoplasm that has passed be- 

 yond its highest stage of perfection ; a catastate. The 

 term is used also as a synonym of anastate, and as a 

 general term for both anastates and catastates. 



Metaplastic {nut-ap-las* '-tik) [uerd, beyond; rc'/.actKoc, 

 plastic]. Pertaining to metaplasia. 



Metapleuron (met-ap-lu' -ron) [,uerd, with ; ~?.evpov, a 

 rib: //., Metapleura~\. In biology, one of the lateral 

 divisions of the metathorax of an insect. 



Metaplex {met'-ap-Uks), Metaplexus (met-ap-leks f -us) 

 [uerd, behind; plexus, a twining]. The choroid 

 plexus of the fourth ventricle. 



Metapneustic (met-ap -nits' -tik) [uerd, behind; 7rvev- 

 ariKoc, of or for breathing]. In biology, applied to 

 that state of the tracheal system in insect larvae in 

 which all the stigmata remain closed, except the last 

 pair, through adaptation to parasitism or an aquatic 

 life. 



Metapodialia (met-ap-o-de-a'-le-ah) [uerd, behind; 

 — oic, foot]. In osteology, a collective term applied 

 to the bones of the metacarpus and metatarsus con- 

 sidered as a segment of the fore-limb or hind-limb, 

 respectively. Cf. Mesopodialia. 



Metapodium (met-apo* -de-um) [perd, behind ; ~ovc, 

 foot: //. , Metapodia~\. In biology, the posterior of 

 the three sections into which the foot of some mol- 

 luscs may be divided. A synonym of Metatarsus. 

 Cf. Mesopodium, Propodium. 



Metapophysis (met-ap-off' '-is-is) [uerd, after; dird^vmc, 

 offshoot]. A mammillary process, such as is seen upon 

 the lumbar vertebrae. 



Metapore (met' -ap-or) [uerd, behind ; Trdpoc, passage]. 

 The foramen of Magendie ; a mesal orifice in the 

 metatela. 



Metapsyche (met-af/ -sik-e) [//rrd, behind ; il>i'xy,soxi\~\. 

 In anatomy, Haeckels term for the hind-brain or met- 

 encephalon. 



Metapsychosis (mei-ap-si-ko / -sis) [pera, beyond; 

 vi\^xjic, psychosis]. Same as Telepathy. 



Metapterygium (met-ap-ter-if -e-um) [perd, behind ; 

 -rspijiov, a little wing : //. , Metaptery^ r ia"\. In biol- 

 ogy, the most posterior of the basal cartilages in the 

 pterygium of a fish. 



Metapterygoid (met-ap- fer / -ig-oid) [uerd. beyond; 

 —repv^ , wing]. Placed behind the pterygoid bone. 



Metaptosis (met-ap-to* -sis) [perd, beyond ; tttuoic, a 

 falling]. Metastasis ; sudden metabolic change. 



Metarrhea (met-ar-e'-ah). Synonym of Metastasis. 



Metarrhysis (met-ar* '-is-is). Synonym of Metastasis. 



Metasaccharic Acid (met-as-ak-ar / -ik). See Acid. 



Metasaccharin (met-as-ak' -ar-iri) [uerd, beyond ; odic- 

 Xapov, sugar], C s H I0 O 5 . An isomerid of saccharin. 

 It crystallizes in plates and melts at 142 C. 



Metaschematism (met-as-ke / -mat-izm) [ueraoxyuari r - 

 tiv, to change the form]. A transformation of a dis- 

 ease into another form ; the change of one substance 

 of the body into another. 



Metasoma (met-as-o / -mah) [uerd, after; aaua, body]. 

 The part of the body of lamellibranchs posterior to 

 the foot ; also the posterior part of cephalopods. 



Metasomatome (met-as-o / -mat-om) [uerd, between ; 

 cuua the body; reuvelv, to cut]. In biology, Good- 

 sir's term for the interspaces between the primitive 

 vertebrae ( Urzoirbel). Cf. Somatome. 



Metasome (met'-as-om) [uerd, after; cuua, body]. 

 In biology, the posterior part of the body of a mollusc. 



Metaspondylum, Metaspondyllum (met-as-pon'- 

 dil-um) [uerd, beyond; aooi'dv/.oc , vertebra]. An 

 intervertebral disc. 



