PHO 



319 



PHY 



photophobia, v.,fdt'-o-f6W>ct (Gr. 

 phos, light, photos, of light ; 

 phob$o, I dread), a dread or 

 intolerance of light, a symptom 

 common to many diseases of the 

 eye. 



phragma,n.,/ra<7-ma, phragmata, 

 n. plu.,frdg'-mat-d (Gi.phragma, 

 a fence or partition), in bot., a 

 transverse division or partition 

 in fruits ; a spurious dissepi- 

 ment. 



phraginacone, n., frdg^md-kon 

 (Gr. phragma, a fence or parti- 

 tion ; konds, a cone), the cham- 

 bered portion of the internal 

 shell of a Belemnite. 



phrenic, a., fren'-ik (Gr. phren, 

 the heart or parts about it, 

 phrenos, of the heart), of or 

 pert. to the parts about 

 the heart ; the name of the 

 nerve arising from the third, 

 fourth, and fifth cervical nerves, 

 which acts as motor of the 

 diaphragm : phrenitis, n., fr&n,* 

 it'-is, inflammation of the brain 

 or its membranes ; delirium : 

 phrenetic, a.,/rgn-&^fc, liable to 

 violent sallies of mental excite- 

 ment : n., a person occasionally 

 wild and erratic. 



phthiriasis, n., thtr-i'-fa-ts (Gr. 

 phtheiridsis from phtheir, a 

 louse), a diseased condition in 

 which lice are bred on and infest 

 the body ; cutaneous invermina- 

 tion. 



phthisis, n., this'ts (Gr. phthisis, 

 a wasting frompJithw, I consume 

 or waste away), pulmonary con- 

 sumption, or wasting disease of 

 the lungs, also called phthisis 

 pulmonalis, p&l'-mtin*&l'-1to (L. 

 pulmo, a lung, pulmonis, of a 

 lung), pulmonary phthisis: phthis- 

 ic, n., tfatik, a wasting away; 

 a person affected with phthisis : 

 phthisical, a., tUik- <, belonging 

 to phthisis ; consumptive : renal 

 phthisis, scrofulous wasting of 

 the kidney. 



phycochrome, n.,fiMd>krdm (Gr. 



phukos, sea - weed ; chroma, 

 colour), the colouring matter 

 in Lichens, and in the lower 

 Algae. 



phycocyanine, n., fik'-o-sl'-an-in 

 (Gr. phukos, sea-weed ; kudnos, 

 blue), in bot., the red colouring 

 matter characteristic of Floridese. 



phycoerythrine, n., fik'-d-er'-ith* 

 rin (Gr. phukos, sea - weed ; 

 eruthros, red), in bot., the red 

 colouring matter, soluble in 

 water, found in Floridese. 



phycology, n., fiTc-Wti-ji (Gr. 

 phukos, sea- weed ; logos, dis- 

 course), the study of Algae or 

 Sea-weeds. 



phycophseine, n.,/zKo/e'm (Gr. 

 phukos, sea- weed ; phaios, brown), 

 in bot. , a reddish-brown substance 

 found in Algae. 



phycoxanthine, n. , fitto-zanth'-in 

 (Gr. phukos, sea- weed ; xanthos, 

 yellow), in bot., the same as 

 'diatomine,' which see under 

 ' Diatomaceae. ' 



phylactolsemata, n. plu., fil-ak'- 

 tO'lem'-at-a (Gr. phulaktikos, 

 having the power to guard from 

 phullasso, I guard ; laimos, the 

 throat), the division of the 

 Polyzoa in which the mouth is 

 provided with the arched valvular 

 process, called the * epistome. ' 



phylla, n. plu.,/$-/a (Gr. phullon, 

 a leaf), in bot., the verticillate 

 leaves which form the calyx or 

 external envelope of the flower. 



phyllaries, n. plu., fll'-lar-iz (Gr. 

 phillur%a, a certain tree or shrub 

 from phullon, a leaf), in bot., 

 the leaflets forming the involucre 

 of composite flowers. 



phyllocysts, n. plu., fil'lo-sists 

 (Gr. phullon, a leaf; kustis, a 

 cyst), the cavities in the interior 

 of the hydrophyllia of certain 

 Oceanic Hydrozoa. 



phyllodium, n., fil-lpd'.i'tim (Gr. 

 phullon, a leaf; eidos, appear- 

 ance), in bot., a leaf-stalk 

 developed into a flattened ex- 

 pansion like a leaf: phyllody, 



