EVO 



155 



EXF 



the state of being turned back or 

 outward. 

 evolution, n., fattil'i&ahiin (L. 



evdlutus, rolled out from e, out ; 

 vofeo, I roll), the theory which 

 maintains that the first created 

 animals contained the germs of 

 all future possible successors, 

 successively included one within 

 the other, and that generation 

 is merely the act of unfolding the 



term ; the theory of the gradual 

 evelopment, at various periods 

 of the world's history of animals 

 and of man from simpler forms 

 and lower types to their present 

 more complex structures. 



exacerbation^ n.,8ks'as'er-bd's7iun 

 (L. exacerbdtus t provoked from 

 ex, out ; acerbus, bitter, harsh), 

 the increase of violence in the 

 symptoms of a disease. 



exalbuminous, a., ^ks'-dl-bumf-m-us 

 (L. ex, out of; Eng. albumen), 

 in bot., without a separate store 

 of albumen. 



exania, n., Vks-dn't-a (L. ex, out 

 of; anus, the fundament), a 

 falling down of the anus ; pro- 

 lapsus ani. 



exammlate, a., Vks-an'-nul'dt (L. 

 ex, out of; annulus, a ring), not 

 having a thecal ring, applied to 

 some ferns. 



exanthema, n., Vks'-anth-em'-d (Gr. 

 exanthema, a blossom from ex, 

 out of; anthos, a flower), an 

 eruption ; applied to contagious 

 febrile diseases terminating in an 

 eruption on the skin, such as 

 scarlet fever, measles, etc. : ex- 

 anthemata, n. plu., tiktf&nth' 

 Zm'-at-a: exanthematous, a., 

 -Vrnf-at-us, of or pert. to. 



exasperate, a., egz-asp'&r-dt (L. 

 exasperdtus, made rough, sharp- 

 ened from ex, out of; asper, 

 rough), in bot., covered with 

 hard, stiff, short points. 



excentric, a,, eks-sentfrik (L. ex, 

 out of; centrum, the centre), out 

 of the centre ; removed from the 

 centre or axis. 



exciple, n., VJcststp-l, also excip- 

 ulum, n., ^ks-sip-'ul'um (L. ex- 

 cipulum, a receptacle from ex- 

 cipio, I catch) I receive), the ex- 

 ternal investment of the thal- 

 amium in the apothecia of lichens : 

 excipuluB, n., eks-slp'-til-us, a re- 

 ceptacle containing fructification 

 in lichens ; a minute black fungus 

 upon dead raspberry stems. 



excision, n., Zk-sizh'-'tm (L. excisus, 

 cut out or off from ex t out of ; 

 ccesus, cut), in surg., the removal 

 by operation of a part of the 

 body, but short of amputation. 



excoriation, n., Vks'-kor-i-a'-shun 

 (L. ex, out of ; corium, skin, 

 hide), a slight wound which only 

 abrades the skin. 



excrement, n., %ks'kre>m%nt (L. 

 excrementum, that which passes 

 from the body from ex, out of ; 

 cretus, separated), the matter dis- 

 charged from animal bodies after 

 digestion; faecal evacuation: ex- 

 crementitious, a., eks'-kre-ment- 

 ish'-uS) consisting of fsecal matter 

 evacuated from an animal body. 



excrescence, n., eks-kres'ens (L. 

 excrescentia, morbid excrescences 

 on the body from ex, out of; 

 crescens, growing), a preter- 

 natural growth on any part of 

 the body ; in bot. , a gnarr or 

 wart on the stem of a tree. 



excreta, n. plu., <6k8-kr$tf-& (L. 

 excretus, carried off or discharged 

 from the body by stool or urine 

 from ex, out of; cretus, separ- 

 ated), the natural secretions or 

 discharges which are thrown off 

 from the body, as from the 

 bowels, the bladder, or by perspir- 

 ation; also excretions, n. plu., 

 Zks-kre'' shuns, in same sense. 



excurrent, a., tks-kur'-rent (L. ex, 

 out of ; currens, running), in bot. , 

 running out beyond the edge or 

 point ; central, as the stem of a 

 fir with branches disposed regul- 

 arly around it. 



exfoliation, n., Vks-fdZf-df-shtin 

 (L. ex, out of ; folium, a leaf), 



