134 



GLOSSARY. 



Pertus'sis (Lat. per, very ; tussis, 

 cough). Hooping-cough. 



Pestiferous (Lat. pestis, plague; fer'o, 

 I bring). Injurious to health ; 

 producing disease. 



Pestilen'tial (Lat. pestis, plague). 

 Partaking of the nature of, or 

 tending to produce, an infectious 

 disease. 



Petal (Gr. ireraXov, pet'alon, a leaf). 

 A ftower-leaf, or part of the corolla, 

 generally coloured. 



Petaloid (Gr. TreroAoy, pet'alon, a 

 leaf or petal ; ei'Soy, eidos, shape). 

 Like a petal or leaf. 



Pete'chia. A small red spot like a 

 flea-bite. 



Pete'chial (Pete'chia}. Belonging to 

 petechise, or characterised by their 

 presence. 



Pet'iolate (Petiole). Having a stalk 

 or petiole. 



Petiole (Lat. pet'iolus, the stalk of 

 fruits ; probably diminutive of pes, 

 a foot). The stem of a leaf. 



Petitio Princip'ii (Lat. a demand of 

 the principle). A species of faulty 

 reasoning, which consists in taking 

 the question in dispute as settled, 

 and drawing conclusions from it. 



Petrifac'tion (Lat. petra, a stone or 

 rock ; fac'io, I make). A changing 

 into stone ; a process effected by 

 the entrance of particles of stony 

 matter in solution into the pores 

 of an animal or vegetable body, 

 taking the place of the organic 

 matter. 



Petrify (Lat. petra, a stone or rock ; 

 fac'io, I make). To change into 

 stone. 



Petro'sal (Lat. petra, A stone or rock). 

 A name given to the ossified por- 

 tion in the fish, corresponding to 

 the petrous portion of the temporal 

 bone in the higher vertebrates. 



Petrous (Lat. petra, a stone or rock). 

 Like stone ; applied to a portion of 

 the temporal boue, from its hard- 

 ness. 



Phaenog'anious (Gr. (paivu, phaino, 

 I show ; ya/j.os, gam'os, marriage). 

 Having conspicuous flowers. 



Phagedaena (Gr. <j>ayw,phag'o, I eat). 

 A rapidly spreading malignant ulcer. 



Phagede'nic (Gr. tyayca, phayo, I eat). 

 Of the nature of a spreading ulcer. 



Phalange'al (Gr. $a\a.y$, phalanx, a 

 line of battle). Belonging to the 

 phalanges, or small bones of the 

 fingers and toes. 



Phalanx (Gr. <pa,\ay%, phalanx, a 

 line of battle). A name applied to 

 the small bones forming the fingers 

 and toes, which are arranged in 

 three rows. 



Phanerogamous (Gr. Qavepos, pkan'- 

 eros, manifest ; yupos, yam'os, mar- 

 riage). Having conspicuous flowers. 



Phantasmago'ria (Gr. <pavraa-p.a, 

 phantas'ma, an appearance ; ayop- 

 aofJMi, agora' omai, I meet). An 

 optical instrument, consisting of a 

 magic lantern which is made to 

 to recede from or approach a screen, 

 so as to magnify or diminish the 

 appearance of objects, and give 

 them an appearance of motion. 



Pharmaceu'tic (Gr. $ap!J.a.Kov, phar'- 

 makon, a drug). Relating to the 

 art of preparing drugs. 



Pharmaceu'tist (Gr. <t>ap/j.a.Kov, phar f - 

 makon, a drug). One who prepares 

 drugs. 



Pharmacopoeia (Gr. (pa.pfjLa.Kov, phar'- 

 makon, a drug ; Troieca, poi'eo, I 

 make). A book which teaches the 

 method of preparing drugs for use 

 as medicines. 



Phar'macy (Gr. <f>ap/j.aKov, phar 1 ma- 

 Icon, a drug). The art of collecting 

 and preparing drugs for use as medi- 

 cine. 



Pharynge'al (Pharynx). Belonging 

 to the pharynx. 



Pharyngotomy (Gr. Qapvyl-, pha- 

 runx, the pharynx ; re^i/co, temno, 

 I cut). The operation of cutting 

 open the pharynx. 



Pharynx (Gr. <t>apvy, pharunx). The 

 muscular organ or tube at the back 

 part of the mouth, which leads into 

 the oesophagus or gullet. 



Phase (Gr. (f>a<ris, phasis, an appear- 

 ance). An appearance ; in astro- 

 nomy, applied to the different 

 appearances which the moon or a 

 planet presents, according to its 

 position with respect to the sun and 

 the earth. 



