EPE 



145 



EPI 



situated over the contents of the 

 head, or the brain. 



epenchyma, n., Zp-eng'-kim-a (Gr. 

 epi, upon; chumos, juice), in bot., 

 the nbro-vascular tissues. 



ependyma, n., %p-en'-dim*a (Gr. 

 ependuma, an outer or upper 

 tunic from epi, upon ; enduma, 

 clothing), the delicate epitbeli- 

 ated structure which lines the 

 canal of the spinal cord and the 

 cerebral ventricles : ependyma 

 ventriculorum, v$n-trik''Ul-dr'um 

 (L. ventriculus, the belly), the 

 ependyma of the ventricles, the 

 epithelial membranes lining the 

 ventricles. 



Ephedra, n. , ef-ed-rd (Gr. ephedra, 

 a sitting, the plant horse-tail), a 

 genus of curious plants, Sub-ord. 

 Gnetacese, Ord. Coniferse, whose 

 berries are eaten in Russia, and 

 by the wandering tribes of Great 

 Tartary. 



ephelis, n., %f-el'is (Gr. epi, upon; 

 helios, the sun), sun - burn ; 

 freckles. 



ephemera, n., $f-$m'$r'& (Gr. epi, 

 upon; hemera, a day), a fever 

 which runs its course in a day : 

 ephemeral, a., $f>em'8r>dl, ap- 

 plied to flowers which open and 

 decay in a day. 



ephippium, n., ef -ip'-pt-um (Gr. 

 ephippeion, a saddle from epi, 

 upon ; hippos, a horse), the deep 

 pit in the middle of the superior 

 surface of the sphenoid bone, so 

 called from its shape. 



epiblast, n.', tp'-t-bldst (Gr. epi, 

 upon ; blastos, a shoot), an 

 abortive organ in the oat, sup- 

 posed to be the rudiment of a 

 second cotyledon. 



epibiema, n., ep'-t-blem'-a (Gr. epi, 

 upon; blema, a wound), an imper- 

 fectly formed epidermis covering 

 the newly formed extremities of 

 roots, etc., being, as it were, 

 the tissue which first covers 

 wounds. 



epicalyx, n., tp't.ldl'ifo (Gr. epi, 

 upon; Eng. valyx), the outer 

 K 



calyx, consisting either of sepals 

 or bracts, as in mallows. 



epicarp, n., Zp'-i-kdrp (Gr. epi, 

 upon ; karpos, fruit), in bot. , the 

 outer coat or covering of the fruit. 



epichilium, n., ^p'-i-kil^um (Gr. 

 epi, upon or above; cheilos, a lip), 

 in bot., the label or terminal 

 portion of the articulated lip of 

 orchids. 



epicline, n., ep'-i-klln (Gr. epi, 

 upon; 'Mine, abed), in bot., the 

 nectary when placed on the re- 

 ceptacle of the flower : epiclinal, 

 a., ep'-i'ldln'-al, seated on the disc 

 or receptacle. 



epicondyle, n., ^4-lM-dll (Gr. 

 epi, upon; kondulos, the elbow- 

 joint), the protuberance on the 

 external side of the distal end of 

 the os humeri or shoulder-bone. 



epicorolline, n., %p'-i-kt)r'-6l'lin 

 (Gr. epi, upon; Eng. corolline), 

 in bot. , inserted upon the corolla. 



epicranium, n. f Vp'-i-kran'-i-ftm 

 (Gr. epi, upon ; Icranion, the 

 skull), the scalp or integuments 

 lying over the cranium : epi- 

 cranial, a.^p'-i-kran'-i-al, applied 

 to the muscle which extends over 

 the upper surface of the cranium 

 uniformly from side to side, with- 

 out division. 



epidemic, a., ty'-i-dem'-ik (Gr. epi, 

 upon; demos, the people), pre- 

 vailing generally ; affecting great 

 numbers: n., a disease univers- 

 ally prevalent in a district or 

 country. 



Epidendrum, n., Zp't-dend'-rum 

 (Gr. epi, upon; dendron, a tree 

 as usually found growing on 

 branches of trees), a very exten- 

 sive genus of ' epiphytes,' Ord. 

 Orchidacese, many of which are 

 deserving of culture for the beauty 

 and delicious fragrance of their 

 flowers: Epidendrum frigidum, 

 fridj'-id-um (L.frlgidus, cold), a 

 species in Columbia, at an 

 elevation of 12,000 or 13,000 feet, 

 covered with a sort of varnish. 



epidermis, n., Zp'-i-derm'-is (Gr. 



