ELA- 



85 



EM In- 



elastic fibres, special fibres, often 

 branched and highly resistant to 

 the action of boiling water, but 

 easily acted on by tryptic digestion 

 (J>hys.). 



elastic fibro-cartilage, consists of 

 cartilage cells and a matrix per- 

 vaded by a network of yellow 

 elastic fibres which branch and 

 anastomose in all directions (anat.). 



elastic tissue, a type of connective 

 tissue in which elastic and yellowish 

 fibres are mixed with the non- 

 elastic fibres (phys.). 



elastin (elas'tin) n. [Gk. elauein, to 

 drive.] The substance which forms 

 elastic tissues (phys.). 



elater (el'ater) n. [Gk. elater, driver.] 

 One of the cells in certain plants 

 with a spiral thickening in the 

 wall which assists in dispersing 

 the spores (bot.). 



electric organ, modifications of 

 muscles or groups of muscles 

 which discharge a considerable 

 amount of electric energy, found 

 in certain Fishes (zool.). 



electroplax (616k'troplaks) n. [Gk. 

 elektron, amber ; plax, anything 

 broad and flat.] One of the con- 

 stituent plates of an electric organ, 

 which are arranged at right angles 

 to the axis of the primitive muscle 

 (zool.). 



electro-tonic (gleYtroton'ik) a. [Gk. 

 elektron, amber ; tonos, tension.] 

 Pert, a state ofelectric tension (phys.). 



electrotonus (elfiktrot'onus) n. [Gk. 

 elektron, amber ; tonos, tension.] 

 The modified condition of a nerve 

 when subjected to a constant 

 current of electricity (phys.). 



eleidin (ele'Idln) n. [Gk. eleos, 

 wandering.] A substance found 

 as small granules in the stratum 

 granulosum of the epidermis, 

 probably a stage in the formation 

 of keratin (phys.). 



element (eTement) n, [L. elementum, 

 unit.] A substance that cannot 

 be separated into simpler substances 

 (phys.). 



eleutherodactyl (61u'th6rodak'tTl) a. 

 [Gk. eleutheros, free ; daktylos, 

 finger.] Having the hind toe 

 free (zool.). 



eleutheropetalous (glu'thgropeValiis) 



a. [Gk. eleutheros, free ; petalon, 

 petal.] Having the petals or the 

 components of the whorl free or 

 separate (dot.). 



eleutherophyllous (61u'th6r6fil'us) a. 

 [Gk. eleutheros, free ; phyllon, leaf.] 

 Having the components of the 

 perianth whorls free (bot.). 



eleutherosepalous (61u'th6rosep'alus) 

 a. [Gk. eleutheros, free ; sepalon, 

 sepal.] Having the sepals free and 

 separate (dot.). 



elliptical (glip'tikal) a. [Gk. elleipsis, 

 a falling short.] Oval-shaped ; 

 appl. leaves of about the same 

 breadth at equal distances from 

 base and apex, which are slightly 

 acute (hot.). 



elytriform (elit'riform) a. [Gk. elytron, 

 sheath ; L./orma, shape.] Shaped 

 like an elytrum (zool.). 



elytroid (elit'roid) a. [Gk. elytron, 

 sheath ; eidos, resemblance.] Re- 

 sembling an elytrum (zool.). 



elytrum (elit'riim) n. [Gk. elytron, 

 sheath.] The anterior wing of 

 certain insects, hard and case-like ; 

 one of the scales or shield-like 

 plates found on the dorsal surface 

 of some worms (zool.). 



emarginate (emar'jinat) a. [L. ex, 

 put ; marginare, to delimit.] Hav- 

 ing a triangular notch at the apex 

 (bot.) ; having the tip notched (zool.). 



embole (em'bole) n. [Gk. embole, 

 putting into place.] Invagination 

 (emb.). 



embolic (embol'lk) a. [Gk. embolos, 

 anything pointed.] Pushing or 

 growing in (emb.). 



embolium (gmbo'lium) n. [Gk. 

 embolos, pointed.] The outer or 

 costal part of the wing in certain 

 insects (zool.). 



embolomerous (e'm'bolom'e'rus) a. 

 [Gk. embolos, anything pointed ; 

 meros, part.] Having two verte- 

 bral rings in each segment due 

 to the union of the hypocentra 

 with the neural arch, and the 

 union of the two pleurocentra 

 below the notochord (anat.), 



embryo (gm'brio) n. [Gk. embryon, 

 embryo.] Any young organism 

 in the early stages of its develop- 

 ment before it has become self- 

 supporting (biol.). 



