GLOSSARY. 



A burning ; the process in which, 

 by the aid of heat, a substance 

 unites with oxygen, or sometimes 

 with chlorine. 



Com'et (Or. KOM, Tcome, hair). A body 

 revolving round the sun in an el- 

 liptical orbit, and having generally 

 a tail or train of light, whence its 

 name. 



Com'ma (Gr. /COTTTCU, Jcopto, I cut). 

 In music, an interval between two 

 sounds, distinguishable by the ear. 



Commen'surable, or Commen'surate 

 (Lat. con, together ; mensu'ra, a 

 measure). Having a common mea- 

 sure ; applied to two or more num- 

 bers capable of being divided by the 

 same quantity without leaving a 

 remainder. 



Com'minute (Lat. con, together ; mi- 

 nuo, 1 lessen). To break into small 

 pieces ; to reduce to powder. 



Com'missure (Lat. con, together ; 

 mitto, I send). A joining together; 

 a joint or seam. 



Com' imitator (Lat. con, with ; muto, 

 I change). That which changes one 

 with another : an apparatus to con- 

 trol and modify the course of an 

 electric current. 



Co'mose (Lat. coma, hair). Hairy. 



Compatible (Lat. con, with ; pa'tior, 

 I suffer or endure). In logic, ex- 

 pressing two views of one object at 

 the same time ; in chemistry and 

 pharmacy, not decomposing each 

 other. 



Compensa'tion Balance. In a watch 

 or chronometer, a contrivance for 

 correcting errors caused by varia- 

 tions of temperature, by means of 

 bars of two or more metals of dif- 

 ferent powers of expansion. 



Complement (Lat. com'pleo, I fill up). 

 That which is required to fill up or 

 complete some quantity or thing. 



Com'plex (Lat. con, with ; plecto, I 

 weave). Made up of two or more 

 parts. 



Complica'tion (Lat. con, together ; 

 plico, I fold or weave). An inter- 

 weaving or involving together ; in 

 medicine, applied to a disease which 

 appears during the presence of 

 another. 



Compo'nent (Lat. con, together ; pono, 

 I put). Making up a compound 

 body. 



Com'posite (Lat. con, together ; pono, 

 I put). Formed of things placed 

 together ; in architecture, applied 

 to an order the characteristics of 

 which are made up from other 

 orders ; in arithmetic, applied to 

 numbers which can be divided 

 exactly by a whole number greater 

 than unity. 



Compres'sible (Lat. con, together; 

 premo, I press). Capable of being 

 pressed together into a smaller 

 space. 



Compres'sor (Lat. con, together ; 

 premo, I press). That which presses 

 together : an apparatus for exer- 

 cising pressure on bodies viewed 

 through a microscope. 



Con'cave (Lat. con, with ; cavus, hol- 

 low). Sinking into a depression in 

 which a rounded body would lie. 



Con'cavo-con'vex. Concave on one 

 surface and convex on the other. 



Concen'trate (Lat. con, together ; cen- 

 trum^ a centre). To bring to a 

 common centre ; to increase the 

 strength of a compound fluid by 

 evaporating the water contained 

 in it. 



Concen'tric (Lat. con, together ; cen- 

 trum, a centre). Having a common 

 centre. 



Conchif 'erous (Lat. concha, a shell ; 

 fero, I bear). Shell-fish ; espe- 

 cially those with bivalve shells. 



Conchoi'dal (Gr. KOJX^ konche, a 

 shell ; e<5oy, eidos, form). Like a 

 shell. 



Conchol'ogy (Gr. Koyxi), Iconche, a 

 shell ; \oyos, logos, a word or 

 description). The science which 

 describes shells. 



Conchyliom'etry (Gr. Koyx v ^ iov i 

 konchu'lion, a shell ; ncrpov, me- 

 tron, a measure). The art of mea- 

 suring shells or their curves. 



Concoc'tion (Lat. con, implying per- 

 fection ; coquo, I cook). A diges- 

 tion, or ripening. 



Concomitant (Lat. con, with ; comes, 

 a companion). Accompanying. 



Concord (Lat. con, with ; cor, the 

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