PSE 



343 



PSY 



pseudobranchia, n., 



i'd (Gr. pseudes, false; brangchia, 

 gills of a fish), in certain fishes, 

 a supplementary gill, which, 

 receiving arterialised blood only, 

 does not assist in respiration. 



pseudo-bulb, n., sud'o-bulb (Gr. 

 pseudes, false ; and bulb), in bot., 

 a swollen aerial of many Orchids, 

 resembling a tuber ; a bulb in 

 appearance only. 



pseudocarp, n., sud'o-kdrp (Gr. 

 pseudes, false ; karpos, fruit), 

 in bot., applied to such fruit 

 as the strawberry, in which 

 other parts are incorporated with 

 the ovaries in forming the 

 fruit. 



pseudohsemal, a., sud'-6-hemf>al 

 (Gr. pseudes, false ; haima, 

 blood), in zooL, applied to the 

 vascular system of the Annelida : 

 pseudo-hearts, certain contractile 

 cavities connected with the arterial 

 system of Brachiopoda, formerly 

 looked upon as hearts : pseudo- 

 navicellse, n. plu., nav'-i-sel'-le 

 (L. nawcula, a little ship from 

 ndvis, a ship), the embryonic 

 forms of the Gregorinidse, so 

 named from their resemblance to 

 the ISTavicula. 



pseudopodium,n. ,sud'-o-pod'-i-um, 

 pseudopodia, n. plu., sud'-o- 

 pod'4'O, (Gr. pseudes, false ; pous, 

 a foot, podes, feet), in bot., the 

 leafless prolongation of the leafy 

 stem in Mosses, bearing the spor- 

 angium ; inzoo^., the extensions 

 of the body-substance which are 

 put forth by the Rhizopoda at 

 will, serving for locomotion and 

 prehension : pseudopodial, a. , 

 sud'd'pdd'i-al, of or pert. to. 



pseudospermous, a., sud'-d'Sperm'- 

 us (Gr. pseudes, false ; sperma, 

 seed), in bot., bearing single 

 seeded seed-vessels, resembling 

 seeds, as in Achenes ; having a 

 false seed cr carpel. 

 pseudova, n. plu., sud-ov'-a (Gr. 

 pseudes, false ; L. ovum., an egg), 

 the egg-like bodies from which 



the young of the viviparous 

 Aphis are produced. 



Psidium, n., sid't-um (Gr. psidias, 

 so named by the anc. Greeks), a 

 genus of fruit-bearing plants, Ord. 

 Myrtacese : Psidium pyriferum, 

 pir-if'e'r'um (L. plrum, a pear ; 



fero, I produce) ; and P. pomifer- 

 um, pom-if-er-um (L. pomum, an 

 apple ; fero, I produce), species 

 which produce the pulpy edible 

 fruits called Guavas : P. Cattle- 

 yanum, kat'-l-yan'um (after 

 William Cattley, an English 

 patron of Botany), has a fruit of 

 a fine claret colour, bearing some 

 resemblance in consistence and 

 flavour to the strawberry. 



psoas, n., so'-as (Gr. psoa, the 

 loins), in anat., applied to two 

 muscles of each loin, lying along 

 the sides of the lumbar vertebrae, 

 viz. the psoas magnus, mdg'-nus 

 (L. magnus, great), and the p. 

 parvus, parv'-us (L. parvus, 

 little), the great psoas, and the 

 little psoas. 



psoriasis, n., sor-i'-as-is (Gr. psor- 

 iasis, the being itchy or mangy 

 from psora, scab, itch), a dry, 

 scaly disease of the skin, charac- 

 terised by slightly raised red 

 patches, covered by white, shin- 

 ing, opaque scales : psora, n. , 

 sor'-a, the itch ; a rough scali- 

 ness of the skin: psoric, a., 

 sor^ik, of the nature of itch : n., 

 a remedy for itch. 



psychology, n., si-kol'-o-ji (Gr. 

 psuche, the soul ; logos, a word), 

 the doctrine of man's spiritual 

 nature ; the science conversant 

 about the phenomena of the mind, 

 or of the conscious subject : 

 psychical, a., slk'-ik-al, relating 

 to or connected with the soul, 

 spirit, or mind. 



Psychotria, n., sik-ot'-rl-a (Gr. 

 psuche, the soul, life ; iatreia, 

 healing), a genus of plants, Ord. 

 Rubiacese, so named in reference 

 to the powerful medical qualities 

 of some of the species: Psychotria 



