EPI- 



93 



EPI- 



process at the posterior end of the 

 toothed part of the coxae of the 

 second, third, fourth, and fifth pairs 

 of appendages in the Eurypterida 

 (Pal.}. 



epicranial (ep'ikra'nial) a. [Gk. epi, 

 upon ; kranion, skull.] Pert. 

 cranium ; appl. muscles, bones, 

 etc. (anat.). 



epicranlum (gp'ikra'nium) n. [Gk. 

 epi, upon ; kranion, skull.] The 

 region between and behind the 

 eyes in an insect's head (zool) ; 

 the structure covering the cranium 

 (anat.). 



epicritic (ep'ikrit'ik) a. [Gk. epi, 

 upon ; krinein, to judge.] Pert. 

 return and accurate localization of 

 elaborate sensations after an opera- 

 tion (phys.). 



epicyte (Ip'islt) n. [Gk. epi, upon ; 

 kytos, hollow.] The external layer 

 of the ectoplasm in certain Protozoa 

 (zool.). 



epidemes (Sp'idemz) n. plu. [Gk. 

 epi, upon ; demas, body.] In 

 certain insects, small pieces closely 

 related with the articulation of the 

 wings (zool.). 



epidermis (gp'Tder'mis) n. [Gk. epi, 

 upon ; derma, skin.] The outer- 

 most protective layer of stems, 

 roots, and leaves, occasionally it 

 may be the outer layer of the 

 ground tissue (hot.) ; the external 

 layer of the skin, a non-vascular 

 stratified epithelium of ectodermic 

 origin ; the single layer of ectoderm 

 in many invertebrates (zool.). 



epididymis (ep'idid'imis) n. [Gk. epi, 

 upon ; didymos, testicle.] A mass 

 at the back of the testicle composed 

 chiefly of the vasa efferentia ; gener- 

 ally speaking, the greatly coiled 

 anterior end of the Wolffian duct 

 (anat., zool.). 



epidural (ep'idu'ral) a. [Gk. epi, upon ; 

 L. dura, hard.] Pert, dura mater ; 

 appl. space between the dura mater 

 and the wall of the vertebral column 

 (anat.). 



epigamic (ep'fgam'ik) a. [Gk. epi, 

 upon ; gamos, marriage.] Tending 

 to attract the opposite sex (zool.). 



epigainous (epig^amus) a. [Gk. epi, 

 upon ; gamos, marriage.] Designat- 

 ing that stage in polychaete worms 



in which the immature forms be- 

 come heteronereid, whilst the sexual 

 elements are ripening (zool.). 



epigaster (ep'Igas'ter) n. [Gk. epi, 

 upon ; gaster, belly.] That part of 

 the embryonic intestine which later 

 develops into the gut (emb.). 



epigastric (gp'igas'trik) a. [Gk. epi, 

 upon ; gaster, belly.] Pert, anterior 

 wall of the abdomen ; middle region 

 of the upper zone of the artificial 

 divisions of the abdomen (anat). 



epigastrium (Sp'Tgas'trium) n. [Gk. 

 epi, upon ; gaster, stomach.] The 

 epigastric region (anat.) ; the sternal 

 portions of the meso- and meta- 

 thorax of insects (zool.). 



epigeal (gp'iie'al) a. [Gk. epi, upon ; 

 gaia, land.] Living near the ground, 

 appl. insects (zool.) ; borne above 

 the ground, appl. cotyledons when 

 they form first foliage leaves (dot.). 



epigenesis (ep'ijen'e'sis) n. [Gk. epi, 

 upon ; gignesthai, to be born.] The 

 theory of generation, that the em- 

 bryo is an entirely new creation, 

 not a mere unfolding of preformed 

 structures (biol.). 



epigeous (gp'Tje'us), see epigeal 

 (bot.). 



epiglottis (ep'iglot'is) n. [Gk. epi, 

 upon ; glotta, tongue.] A thin leaf- 

 shaped lamella of fibro-cartilage, 

 yellowish in colour, between the 

 root of the tongue and the entrance 

 to the larynx (anat) ; the epistome 

 in Polyzoa ; the epipharynx in In- 

 sects (zool.). 



epignathous(6p'igna'thus,6pig'nathus) 

 a. [Gk. epi, upon ; gnathos, jaw.] 

 Having the upper jaw longer than 

 the lower (zool.). 



epigonium (e'p'Igo'nlum) n. [Gk. epi, 

 upon ; gone, seed.] The young 

 sporangial sac in the Liverworts 

 (bot.). 



epigynous (gpij'mus) a. [Gk. epi, 

 upon ; gyne, woman.] Having the 

 various whorls adnate to the ovary, 

 thus apparently inserted in the ovary 

 (bot.). 



epigyny (epij'inl) n. [Gk. epi, upon ; 

 gyne, woman.] The condition of 

 having the whorls apparently in- 

 serted in the ovary (bot.). 



epihyal (gp'ihi'al) a. [Gk. epi, upon ; 

 hyoeidcs, Y-shaped.] Pert, the upper 



