GLOSSARY. 



15 



abolished, from injury within the 

 brain. 



Apparatus (Lat. ad, to ; paro, I 

 make). An instrument or organ 

 for the performance of any operation 

 or function. 



Ap'plicate (Lat. ad, to ; plico, I fold). 

 In geometry, a straight line drawn 

 across a curve so as to be bisected 

 by the diameter. 



Ap'sides (Gr. airru, hapto, I touch). 

 The points in the path of the moon 

 or a planet when it is respectively 

 nearest to and most distant from 

 the earth. 



Ap'terous (Gr. o, a, not ; irrepov, 

 pteron, a wing). Withou,, wings. 



Ap'tote (Gr. d, a, not ; TTTUCTIS, ptusis, 

 case). In grammar, applied to 

 nouns which have no distinction of 

 cases. 



Apyret'ic (Gr. d, a, not ; pe<r0-a>, 

 puresso, I have a fever). Without 

 fever. 



Apyrez'ia (Gr. d, a, not ; irype<7<ra>, 

 puresso, I have a fever). Freedom 

 from fever. 



Aqua fortis (Lat. strong water). A 

 name for nitric acid. 



Aqua regia (Lat. royal water). A 

 mixture of nitric and hydrochloric 

 acids, used to dissolve gold. 



Aqua vitae (Lat. water of life). A 

 name for strong spirits. 



Aquat'ic (Lat. aqua, water). Belong- 

 ing to, or living or growing in water. 



A'queous (Lat. aqua, water). Watery ; 

 consisting of or having the proper- 

 ties of water ; made with water. 



Ar'able (Lat. aro, I plough). Capable 

 of being cultivated by the plough. 



Arach'nida (Gr. dpaxvn, arachne, a 

 spider). A class of invertebrate 

 animals, including spiders, scor- 

 pions, and mites. 



Arachnitis (Arachnoid; itis, denoting 

 inflammation). Inflammation of 

 the arachnoid membrane of the 

 brain. 



Araeh'noid (Gr. apaxvn, arachne, a 

 spider or spider's web ; ciSos, 

 eidos, form). A thin membrane 

 covering the brain. 



Ara'neiform (Lat. ara'neus, a spider ; 

 forma, shape). Resembling a spider. 



Arbor (Lat. a tree). In mechanics, 

 the part of a machine which sus- 

 tains the rest ; an axis or spindle. 



Arbor vitse (Lat. tree of life). In 

 anatomy, a tree-like appearance of 

 the brain-substance, seen when the 

 cerebellum is cut transversely. 



Arbores'cent (Lat. arbor, a tree). Re- 

 sembling a tree ; becoming woody. 



Arc (Lat. arcus, a bow). A part of 

 the circumference of a circle or of 

 a curved line. 



Arca'num (Lat. area, a chest). A 

 secret. 



Arch (Gr. dpxn, arche, the beginning 

 or head). A prefix denoting emi- 

 nence. 



Archaeol'ogy (Gr. dpxaws, archaios, 

 ancient ; \oyos, logos, discourse). 

 The science which describes an- 

 tiquities. 



Ar'chaism (Gr. dpxaios, archaios, 

 ancient). An ancient or disused 

 word or expression. 



Archenceph'ala (Gr. apxos, archos, 

 chief; (yite<pa\os, enkeph'alos, the 

 brain). Chief-brained : a term 

 proposed by Professor Owen to de- 

 note the highest sub-class of the 

 mammalia, comprising only man, 

 from the superior development of 

 his brain. 



Ar'chetype (Gr. apxn, arche, a begin- 

 ning ; rviros, tupos, a type). An 

 original pattern or model. 



Archime'des' screw. An instrument 

 formed of a tube wound round a 

 cylinder in the form of a screw, 

 and used either for raising fluids 

 or for propelling through water. 



Architecture (Gr. apxos, archos, 

 chief ; TCKTWV, tdkton, a builder). 

 The science of constructing houses, 

 bridges, and other buildings, 

 according to rule. 



Architrave (Gr. apxos, archos, chief ; 

 Lat. trabs, a beam). The lowest 

 part of an entablature, being the 

 chief beam resting immediately on 

 the column. 



Ar'ciform. (Lat. arcus, a bow ; forma, 

 shape). Like an arch. 



Arctic (Gr. apKros, arktos, a bear, or 

 the north pole). Relating to the 

 north pole. 



