GLOSSARY. 



63 



Excres'cence (Lat. ex, from; cresco, 

 I grow). An unnatural or super- 

 fluous growth. 



Excre'tion (Lat. ex, from ; cerno, 

 I separate). A separation of fluids 

 from the body by means of glands ; 

 the fluids separated. 



Excre'tory (Lat. ex, from ; cerno, I 

 separate). Having the property of 

 excreting or thro wing off; removing. 



Exege'sis (Gr. e'l^coucu, exegeomai, 

 I explain). An explanation. 



Exfoliate (Lat. ex, from ; folium, a 

 leaf). To separate in scales, as 

 diseased bone, or the lamina of a 

 mineral. 



Exha'lant (Lat. ex, from ; halo, I 

 breathe). Breathing out or evapor- 

 ating. 



Exhala'tion (Lat. ex, from ; halo, I 

 breathe). The act of exhaling or 

 sending forth in vapour ; that which 

 is emitted as vapour. 



Exhale (Lat. ex, from ; halo, I 

 breathe). To breathe or send out 

 vapour. 



Exhau'st (Lat. ex, from ; hau'rio, I 

 draw). To draw off; to empty by 

 drawing out the contents. 



Exocar'dial (Gr. ew, exo, outside ; 

 KapSia, kar'dia, the heart). Out- 

 side the heart. 



Ex'ogen (Gr. ew, exo, outside ; 

 yevvaoa, gennao, I produce). A 

 plant which grows by additions to 

 the outside of the wood. 



Exog'enites (Ex'ogen). Fossil stems 

 exhibiting the exogenous structure. 



Exogenous (Gr. e|o>, exo, outside ; 

 yevvau, gennao, I produce). In 

 botany, growing by addition to the 

 outside ; in anatomy, growing out 

 from a bone already formed. 



Exor'dium (Lat. ex, from ; or'dior, I 

 begin). The introductory part of 

 a discourse. 



Exorhi'zal (Gr. fa>, exo, outside ; 

 pia, rhiza, a root). A term applied 

 to plants of which the roots do not 

 burst through the coverings of the 

 seed before growing downwards. 



Exoskel'eton (Gr. e'|co, exo, outside; 

 (TKeXsrov, sled' etori) , An external 

 skeleton, such as is found in many 

 invertebrate animals ; also in those 



vertebrate animals which have ossi- 

 fied or bony plates connected with 

 the skin. 



Ex'osmose (Gr. <?, ex, out ; wfow, 

 otheo, I drive). The passage of 

 one fluid to another through a 

 membrane from within outwards. 



Ex'ostome (Gr. ^|, exr>, outwards ; 

 0-To/j.a, stoma, a mouth). The 

 outer aperture in the ovule of a 

 plant, towards which the apex of 

 the nucleus points. 



Exosto'sis (Gr. e, ex, out ; oa-reov, 

 os'teon, a bone). An unnatural 

 projection or growth from a bone. 



Exoteric (Gr. e|o>, exo, outside). 

 External ; public. 



Exothe'cium (Gr. e'co, exo, outside ; 

 6r)Kiov, t/ie'kion, a box). In botany, 

 the outside covering of the anther, 

 the inner being the endotheciurn. 



Exotic (Gr. e|co, exo, outside). 

 Brought from a foreign country. 



Expansibility (Lat. ex, out ; pando, 

 I open). Capability of being en- 

 larged or extended in all directions. 



Expec'torant (Lat. ex, from ; pectus, 

 the breast). Promoting discharge 

 from the air-passages and lungs. 



Expec'torate (Lat. ex, from ; pectiis, 

 the breast). To discharge from 

 the air-passages or lungs 



Expira'tion (Lat. ex, from ; spiro, I 

 breathe). A breathing out of air 

 or vapour. 



Expo'nent (Lat. expo' no, I set forth). 

 A number or figure which, placed 

 above and to the right hand of a 

 number, denotes what root is to be 

 extracted, or to what power it is to 

 be raised : in the former case, 

 fractious are used ; in the latter, 

 whole numbers ; also the number 

 which denotes the ratio between 

 two quantities. 



Expression (Lat. ex, out ; prem'o, 

 I press). A pressing out ; in 

 algebra, any quantity, simple or 

 compound. 



Exsan'guine (Lat. ex, from ; sanguis, 

 blood). Without blood; deprived 

 of blood. 



Exsert'ed (Lat. ex'serso, I thrust out). 

 In botany, extending beyond an 

 organ. 



