EPI- 



95 



EPI- 



That portion of the plankton from 

 the surface to the hundred fathoms 

 line (zool.}. 



eplplasm (Sp'iplazm) n. [Gk. epi, 

 upon ; plasma, something moulded.] 

 Cytoplasm of a brood mother-cell 

 remaining over unused in brood 

 formation (biol.}. 



epiplastron (p'iplas'tron) n. [Gk. 

 epi, upon ; F. plastron, breast-plate.] 

 One of the anterior pair of bony 

 plates in the plastron of Chelonians 

 (zool.}. 



epipleura (ep'iploo'ra) n. [Gk. epi, 

 upon ; pleuron, rib.] One of rib- 

 like structures in Teleosts which 

 are not preformed in cartilage ; an 

 uncinate process in birds ; the 

 turned down outer margin of the 

 elytra of certain beetles (zool.}. 



epiploic (gp'iplo'ik) a. [Gk. epiploon, 

 caul of the entrails.] Pert, the 

 omentum. 



epiploic foramen, the opening be- 

 tween the bursa omentalis and the 

 large sac of the peritoneum ; the 

 foramen of Winslow (anat.}. 



epiploon (gp'iplo'on) n. [Gk. epiploon, 

 caul of the entrails.] The great 

 omentum (anat.} ; insect adipose 

 tissue (zool.}. 



epipodial (ep'ipo'dial) a. [Gk. epi, 

 upon ; pous, foot.] Pert, the epi- 

 podium. 



epipodite (epip'odij) n. [Gk. epi, 

 upon ; pous, foot.] A process 

 arising from the basal joint of the 

 crustacean limb and usually ex- 

 tending into the gill chamber (zool.}. 



eplpodium (Sp'ipo'dTum) n. [Gk. epi, 

 upon ; pous, foot.] The embryonic 

 leaf-lamina (bot.} ; ridge or fold 

 running along the entire edge of the 

 creeping sole of the foot of Gastro- 

 pods, often beset with papillae ; the 

 raised ring on an ambulacral plate 

 surrounding the two pores through 

 which the tube-feet project in 

 Echinoidea (zool.}. 



epiprecoracoid (ep'iprekor'akoid) ;/. 

 [Gk. epi, upon ; L. pre, before ; Gk. 

 tnnur, crow ; eidos, resemblance.] 

 A small cartilage at the ventral 

 end of the precoracoid in some 

 turtle pectoral girdles (zool.}. 



epipteric (ep'ipter'ik) a. [Gk. epi % 

 upon ; pteron, wing.] Pert, or 



shaped like, or placed above the 

 wing ; appl. a small bone in the 

 skull between the parietal and the 

 sphenoidal ala (anat.}. 



epipterygoid (ep'iptgr'igoid) n. [Gk. 

 epi, upon ; pteryx, wing.] A small 

 bone extending nearly vertically 

 downwards from the prootic to the 

 pterygoid ; also called columella 

 (zool.}. 



epipubic (ep'ipu'blk) a. [Gk. epi, 

 upon ; L. pubes, adult.] Pert, or 

 borne upon the pubis ; appl. 

 certain cartilages or bones princi- 

 pally in marsupials (zool.}. 



epipubis (ep'fpu'bis) n. [Gk. epi, 

 upon ; L. pubes, adult.] An un- 

 paired cartilage or bone borne 

 anteriorly on the pubis (zool.}. 



epirhizous (epTrfzus) a. [Gk. epi, 

 upon ; rhiza, root.] Growing upon 

 a root (bot.}. 



episepalous (gp'isep'alus) a. [Gk. epi, 

 upon ; sepalon, sepal.] Adnate to 

 the sepals (bot.}. 



episkeletal (ep'iskel'gtal) a. [Gk. epi, 

 upon ; skeletos, hard.] Outside the 

 endoskeleton (zool.}. 



episperm (Sp'isperm) n. [Gk. epi, 

 upon ; sperma, seed.] The testa or 

 outer coating of the seed (bot.}. 



episporangium (gp'isporan'jTum) n. 

 [Gk. epi, upon ; sporos, seed ; 

 anggeion, vessel.] An indusium 

 (bot.}. 



epispore (ep'ispor) n. [Gk. epi, upon ; 

 sporos, seed.] The outer layer of 

 the wall of a sporocyst (zool.}. 



episternalia (6p'ist6rna'lia) n. plu. 

 [Gk. epi, upon ; sternon, breast- 

 bone.] Two small elements pre- 

 formed in cartilage frequently inter- 

 vening in development between the 

 clavicles and the sternum, and 

 ultimately fusing with the sternum 

 (zool.}. 



episternite (ep'isteYnit) n. [Gk. epi, 

 upon ; sternon, breast-bone.] One 

 of the portions of an ovipositor 

 formed from the side portions of a 

 somite (zool.}. 



episternum (ep'isteYnum) . [Gk. 

 epi, upon ; sternon, breast-bone.] 

 The interclavicle ; also applied to 

 an anterior cartilaginous element 

 of the sternum ; a lateral division 

 of an arthropod somite, usually 



