GLOSSARY. 



145 



ratus which some insects use in 

 sucking; the long tongue of cer- 

 tain gasteropods, capable of being 

 protruded to some distance. 



Proc'ess (Lat. proce'do, I move 

 forward). A proceeding or opera- 

 tion ; in anatomy and botany, a 

 prominence or projecting part ; 

 applied also to the parts of a 

 vertebra which grow out from pre- 

 viously ossified parts. 



Proclivity (Lat. proclivus, inclined). 

 An inclination or disposition. 



Procne'mial (Gr. irpo, pro, before ; 

 Kvr)/j.T), Jcncme, the knee). In 

 front of the knee. 



Procoe'lian (Gr. irpo, pro, before ; 

 KOI\OS, koi'los, hollow). Having 

 the vertebrae concave in front. 



Procum'bent (Lat. procum'bo, I lie 

 down). Lying on the ground. 



Progno'sis (Gr. irpo, pro, before ; 

 yiyvucTKu, gigrios'ko, I know). 

 The art of judging of the course 

 and event of a disease by the 

 symptoms. 



Prognostic (Gr. ttpo, pro, before ; 

 yiyvca<TK<a, gignos'ko, I know). 

 Relating to foreknowledge ; applied 

 to the symptoms from which the 

 result of a disease is predicted. 



Progres'sion (Lat. pro, forward ; 

 yrad'ior, I step). A moving for- 

 ward or advancing ; in arithmetic, 

 a regular or proportional advance 

 of numbers in a series, increasing 

 or decreasing ; in astronomy, the 

 change which occurs every month 

 in the position of the moon's apogee 

 and perigee, in which these points 

 appear to have moved forward, or 

 from west to east. 



Projec'tile (Lat. pro, forward; jatfio, 

 I cast). A body impelled by force, 

 especially through the air. 



Projection. (Lat. pro, forward ; 

 jac'io, I cast). A throwing for- 

 ward ; applied also in architecture 

 to a plan or delineation. 



Prolate (Lat. pro, forward ; la'tus, 

 borne). Extended beyond the line 

 of an exact sphere. 



Prolegomena (Gr. irpo, pro, be- 

 fore; Ae7co, leg'b, I speak). Lite- 

 rally, things said first ; introduc- 



tory remarks prefixed to a book or 

 treatise. 



Prolegs (Lat. pro, for ; legs). The 

 tubercles representing legs on the 

 hinder part of caterpillars. 



Proliferous (Lat. pro'les, offspring; 

 fer'o, I bear). Fruitful ; produc- 

 tive ; in botany, bearing abnormal 

 buds. 



Prolific (Lat. pro'les, offspring ;fac:io, 

 I make) . Fruitful ; productive. 



Prolig'erous (Lat. pro'les, offspring ; 

 ge^o, I bear). Bearing the rudi- 

 ments of the embryo or offspring. 



Prona'tion (Lat. pro'nus, having the 

 face downward). The position of 

 the arm and hand in which the 

 palm is turned downwards. 



Prona'tor (Lat. pro'nus, with the face 

 downwards). A muscle which 

 turns the arm so that the palm of 

 the hand looks downwards. 



Prone (Lat. pro'nus). Bending for- 

 ward ; having the face or anterior 

 surface downwards. 



Prono'tum (Gr. irpo, pro, before ; 

 WTO*, notos, the back). The 

 upper half of the anterior division 

 of the thorax in insects. 



Prop'erty (Lat. pro'prius, proper). 

 A peculiar quality of anything ; 

 that which is inherent in, or natu- 

 rally essential to, a substance. 



Prophylac'tic (Gr. irpo, before ; 

 (pv\a(ro-u, phulas'so, I guard). In 

 medicine, preserving from disease. 



Prophylaxis (Gr. irpo, pro, before ; 

 (pv\a.<ro-(a, phulas'so, I guard). The 

 art of preventing or del ending 



Prop'olis (Gr. irpo, pro, before ; 



pol'is, a city). A thick substance 

 formed by bees, and \ised as a 

 kind of mortar or cement to their 

 hives. 



Propor'tion (Lat. pro, for ; por'tio, a 

 share). The comparative relation 

 of one thing to another ; in arith- 

 metic, the identity or similitude of 

 two or more ratios. 



Proposition (Lat. pro, forward; 

 po'no, I put). A thing proposed or 

 put forward ; in logic, a sentence 

 or statement in which something is 

 affirmed or denied of a subject ; in 



