356 The Realm of Nature 



Biology, Gr. bios, life ; logos, a discourse 



Bisect, L. bis, twice ; seco, to cut (to divide into two equal parts) 



Boreal, L. boreas, the north wind, northern 



Botany, Gr. botane, herb or plant 



CAINOZOIC, Gr. kainos, recent ; zoe, life 



Calcareous, L. calcarms, chalky 



Capillarity, L. capillus, hair 



Carposporese, Gr. karpos, fruit ; sporos, seed 



Centrifugal, L. centrum, centre ; fugio, to flee from 



Centripetal, L. centrum, centre ; peto, to seek 



Chlorophyll, Gr. chloros, pale green ; ptmllon, leaf 



Chromosphere, Gr. chroma, colour ; sphaira, a sphere 



Chronometer, Gr. chronos, time ; metron, measure 



Cirrus, L. cirrus, a curl 



Ccelenterata, Gr. koilos, hollow ; enteron, bowel 



Cohesion, L. co, together ; h&reo, to stick 



Comet, Gr. kometes, long-haired 



Complement, L. complementum, that which fills up 



Concentric, L. con, with ; centrum, centre (having the'same centre) 



Conduction, L. con, together ; duco, to lead 



Constellation, L. con, together ; Stella, a star 



Convection, L. con, together ; veho, to carry 



Cretaceous, L. creta, chalk 



Cryptogam, Gr. kruptos, concealed ; gamos, marriage 



Cumulus, L. cunmhts, a heap 



Cyclone, Gr. kuklos, a circle 



DATUM (pi. data), L. datum, given 

 Deciduous, L. decidttus, falling off 

 Desiccation, L. desicco, to dry up 

 Detritus, L. de, off; tero, tritus, to rub 

 Devitrification, L. de, from ; vitrum, glass ; facio, to make 

 Diameter, Gr. dia, through ; metrein, to measure 

 Dicotyledon, Gr. dis, two ; kotuledon, a cup( -shaped leaf) 

 Discrete, L. discretus, separate 



ECHINODERMATA, Gr. echinos, hedgehog (spiny) ; derma, skin 

 Elasticity, Gr. elaso, to drive 



Electricity, Gr. elektron, amber (by rubbing which electric phen- 

 omena were first observed) 

 Ellipsoid, Gr. en, in ; leipo, to leave ; eidos, form 



