PHY 



322 



PIL 



plant), in lot., a rudimentary 

 plant, as represented by a leaf. 



phytophagous, a,.,fit-df-ag'US (Gr. 

 phuton, a plant ; phago, I eat), 

 plant-eating ; herbivorous. 



phytozoids, n. plu., flt'o-zo'-idz 

 (Gr. phuton, a plant ; zodn, an 

 animal ; eidos, resemblance), in 

 bot., peculiar bodies, rolled up in 

 a circular or spiral manner, in 

 the cellules of the antheridia 

 in Hepaticse and Mosses, which 

 exhibit active movements at 

 certain periods of their existence, 

 and thus resemble animalcules ; 

 Spermatozoids, or Antherozoids. 



phytozoon, n., fit'-o-zo'dn (Gr. 

 phuton, a plant ; zodn, an animal, 

 zoa, animals), a plant-like anim- 

 alcule, or one living in the 

 tissues of plants : phytozoa, n. 

 plu., ftt'o-zo'-a, in bot., moving 

 filaments in the antheridia of 

 Cryptogams. 



pia-mater, n., jn'-a-mat'-er (L., 

 kind mother), a delicate, fibrous, 

 and highly vascular membrane, 

 which immediately invests the 

 brain and spinal cord. 



pica, n. , pik'-a (L. and It. pica, a 

 magpie, hunger), an appetite to 

 eat or drink things unusual, such 

 as coal, earth, etc. ; a depraved 

 appetite. 



Picrsena, n., pik-ren'-a (Gr. pikros, 

 bitter), a genus of plants, Ord. 

 Simarubacese : Picrsena excelsa, 

 ek'Sels'-a (L. excelsus, elevated, 

 lofty), a lofty forest tree of 

 Jamaica, whose wood forms the 

 Quassia of the shops, used in the 

 form of an infusion and tincture 

 as a slightly narcotic tonic, and 

 anthelmintic. 



picromel, n., pik'-rom-el (Gr. 

 pikros, bitter ; meli, honey), a 

 peculiar sweet bitter substance 

 found in bile. 



picrotoxin, n., pik'-TO'tolcs'-m, also 

 picrotoxia, n.^pik'-rd'toks'-i-a (Gr. 

 pikroSj bitter ; Gr. toxikon, L .toxic- 

 urn, the poison in which arrows 

 were dipped), a crystalline, poison- 



ous, narcotic principle, forming 

 the active bitter ingredient in the 

 berries of the Cocculus Indicus : 

 picrotoxic, a., pitf-rd-tdks'-ik, of 

 or pert. to. 



pigment, n., pig'ment (L. pig- 

 mentum, a paint from pingo, 

 I paint), any colouring matter 

 wherever found ; the term is 

 mainly applied to colouring 

 matter in certain positions of the 

 body, as in the inner layer of 

 the choroid. 



pileate, a., pil'$-dt (L. pilous, a 

 close-fitting felt cap), in bot., 

 having a cap like the head of a 

 mushroom : pileus, n., pll'-e^tis, 

 in bot., the cap-] ike portion of 

 the mushroom, bearing the 

 hymenium on its under side : 

 pileoli, n. plu. , pil-e'-ol-l (dimin. ), 

 little pilei, several usually pro- 

 ceeding from the same common 

 stem. 



pileorhiza, n., pil'V-d-riz'-a (Gr. 

 pileds, a cap ; rhiza, a root), in 

 bot. , a covering of the root, as in 

 Lemna ; a cap found at the end 

 of some roots. 



piles, n. plu. , pilz (L. pila, a ball 

 of anything), a popular name for 

 a disease of the veins at the 

 extremity of the rectum, assum- 

 ing a knotted or clustered form 

 around the anus called bleeding 

 piles when there is a discharge 

 of blood from them, and blind 

 piles when there is none ; haemor- 

 rhoids. 



pili, n. plu., pil-i (L. pilus, hair), 

 in bot., fine slender hair-like 

 bodies covering some plants : 

 piltform, a., pil'-i-form (L. 

 forma, shape), having the form 

 of hairs : Pilocarpus, n., plV-o* 

 kdrp f -us (L. pilosus, hairy ; Gr. 

 karpos, fruit), a genus of plants, 

 Ord. Rutacese : Pilocarpus pen- 

 natifolius, pen-ndt'-i-fdl'-i-us (L. 

 penna, a feather ; folium, a leaf), 

 used as a sudorific and siala- 

 gogue : pilocarpine, n., pil'-o* 

 hdrp'm, the active principle of 



