GLOSSARY 483 



transformation of an organic substance into new compounds by the 

 action of a ferment. 



Fibril'la, pi Fibril'lae. [Dim. of Lat. fibra, a " fibre."] A little fibre. 



Fibrin'ogen. A protein in blood plasma, the main constituent of fibrin. 



Fi'brous. [From the Lat. fibra, " fibre."] Containing or consisting 

 of fibres. Having the character of fibres. 



Fib'ula. [Lat. a " clasp."] The long sphnter bone of the leg. 



Fil'ifonn. [From the Lat. filum, a "thread," and forma, "form."] 

 Thread-like. 



Fim'briae. [Lat. a " fringe."] A border, or fringe. 



Fis'sion. [From the Lat. findo, fissum, to " cleave."] A cleaving, or 

 breaking up into two parts. 



Fo'cus. [From the Lat. focus, " hearth or fireplace."] A po^'nt at which 

 the rays of light meet, after being reflected or refracted. Point 

 at which an image is formed. 



Foe'tus. The child in utero from the fifth month of pregnancy till birth. 



Fol'licle. [From the dim. of Lat. follis, a " bag."] A little bag; a small 

 gland. 



Fontanelle'. [Fr.] A httle fountain. A term appUed to the mem- 

 branous spaces between the cranial bones in the new-born infant, 

 in which the pulsation of the blood in the cranial arteries was im- 

 agined to rise and fall like the water in a fountain. 



Fora'men, pi. Foram'ina. [Lat.] An opening, hole, or aperture. 



Fos'sa, pi. Fos'sae. [From the Lat. fodio, fossum, to " dig."] A depres- 

 sion, or sinus ; literally, a ditch. 



Fo'vea Centralis. [Lat.] Central depression of the macula lutea. The 

 point of most acute vision. 



Fun'giform. [From the Lat. fungus, a " mushroom," Sind forma, *' form."] 

 Having the shape of a mushroom. 



Funic'ulus, pi. Funic'uli. [Dim. of Lat. funis, a " rope."] A little cord, 

 or bundle, of aggregated fibres. 



Fu'siform. [From the Lat. fusiis, a " spindle," and forma, " form."] 

 Spindle-shaped. 



Gang'lia, pi. of Gang'lion. [From the Gr. gagglion, a " knot."] A 

 collection of nerve-cells in the course of a nerve that has the ap- 

 pearance of a knot. 



Gas'tric. [From the Gr. gaster, the " stomach."] Pertaining to the 

 stomach. 



