MET- 



188 



MET- 



after; lophos, a crest.] The posterior 

 crest of a molar, uniting metacone, 

 metaconule, and hypocone (zool.}. 



metamere (mSt'amer) n. [Gk. me/a, 

 after ; meros, part.] A body 

 segment (zoo/.). 



metameric (m 6 t'amg r'lk) a. [Gk. me fa, 

 after ; meros, part.] Pert, metamer- 

 ism or segmentation (zool.}. 



metamerism (mStam'Srizm) n. [Gk. 

 meta, after ; meros, part.] The 

 condition of a body divided up 

 into segments more or less alike ; 

 segmentation ; zonal symmetry 

 (zool.}. 



metamerized (me'ta'm'e'rizd) a. [Gk. 

 meta, after ; meros, part.] Seg- 

 mented (zool.}. 



metamitosis (mSt'Smito'sis) n. [Gk. 

 meta, after ; mitos, thread.] Mitosis 

 in which cytoplasmic and nuclear 

 elements are both affected ; cf. 

 mesomitosis. 



metamorphosis (mgt'amor'fbsis) n. 

 [Gk. meta, beyond ; morphe, form.] 

 Change of form and structure under- 

 gone by an animal from embryo to 

 adult stage, as in Insects (zool.} ; 

 interference with normal symmetry 

 in flowers (bot.} ; internal chemical 

 change (phys.}. 



metamps (me'tamp's, me'tamps) n. 

 plu. [Gk. meta, after ; morphe, 

 form.] Different forms of the same 

 species, as in certain Sponges (zool.}. 



metanauplius (mgt'anop'lius). [Gk. 

 meta, after ; L. nauplius, a kind of 

 shell-fish.] The larval stage of 

 Crustacea succeeding the nauplius 

 stage (zool.}. 



metanephric (meYaneTrik) a. [Gk. 

 meta, after ; nephros, a kidney.] 

 Pert, or in the region of the hind- 

 kidney (emb.}. 



metanephros (m6t'angf'r6s) n. [Gk. 

 meta, after ; nephros, a kidney.] 

 The organ arising behind the 

 mesonephros and replacing it as 

 the functional kidney of fully- 

 developed amniotes (zool.}. 



metanotum (mgt'ano'tum) n. [Gk. 

 meta, after ; noton, back.] The 

 notum or tergum of the meta- 

 thorax of Insects (zool.}. 



metanucleus (me't'anu'kleus) n. [Gk. 

 meta, after ; L. nucleus, a kernel.] 

 A term appl, by Haecker to the 



egg-nucleus after its extrusion from 

 the germinal vesicle (cyt.}. 



metapeptone (met'apep'ton) n. [Gk. 

 meta, after ; peptos, cooked.] A 

 product of the action of gastric 

 juice on albumins (phys.}. 



metaphase (meYafaz) n. [Gk. meta, 

 after ; phainein, to appear.] The 

 stage in mitosis in which the 

 chromosomes are split up in the 

 equatorial plate (cyt.}. 



metaphery (mgtaf'grl) . [Gk. meta, 

 beyond ; pherein, to bear.] Dis- 

 placement of organs (bot.}. 



metaphloem (mgt'aflo'gm) n. [Gk. 

 meta, after ; phloos, bark.] The 

 phloem of secondary xylem (bot.}. 



metaphragma (mSt'afr&g'ma) n. [Gk. 

 meta, after ; phragma, a fence.] 

 An internal metathoracic septum 

 in Insects (zool.}. 



metaphyte (mgt'afit) n. [Gk. meta, 

 after ; phyton, plant.] A multi- 

 cellular plant (bot.}. 



metaplasia (met'apla'zia) n. [Gk. 

 meta, after ; plasis, moulding.] 

 Conversion of tissue from one 

 form to another, as in ossification 



metaplasia (metap'lasts) n. [Gk. 

 meta, after ; plasis, moulding.] 

 The mature period in the life of 

 an individual (phys.}. 



metaplasm (mgt'aplazm) n. [Gk. 

 meta, after ; plasma, something 

 moulded.] The lifeless ingredients 

 of protoplasm, as opp. to the living 

 material (cyt.}. 



metaplastic (mgt'aplas'tik) a. [Gk. 

 meta, after ; plastos, moulded.] 

 Pert, metaplasia or metaplasm 

 (cyt.}. 



metaplastic bodies, grains or 

 granules of protoplasm which are 

 stages or products of metabolism 

 and not true protoplasm (cyt.}. 



metapleural (met'aploo'ral) a. [Gk. 

 meta, after ; pleura, a side.] Pos- 

 teriorly and laterally situated ; 

 pert, a metapleure or metapleuron 

 (zool.}. 



metapleure (meYaploor) n. [Gk. 

 meta, after ; pleura, a side.] An 

 abdominal or ventro-lateral fold of 

 integument of certain of the lowest 

 vertebrates (zool.}. 



metapleuron (mSt'aploor'Sn) n. [Gk. 



