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GLOSSARY OF IMPORTANT TERMS 



Myriad (mfr1-#d): an indefinite 

 large number. 



Narcotic (nar-k6t'Ik) : a drug which 

 in great doses produces stupor. 



Neutralize (nu'trdl-lz) : to counter- 

 act. 



Nucleus (nu'kle"-#s) : a central mass. 



Nutrient (nu'trf-ent) : substances 

 which furnish food to the body. 



Opaque (6-pak'): not permitting 



light to pass through. 

 Organic (6r-gan'Ik) : pertaining to 



living plants and animals. 

 Oxidation (6k'st-da'shwn) : act of 



combining with oxygen. 

 Oxidize (6k'sl-diz) : to add oxygen. 



Parallel (par'a-lel) : lying evenly 



everywhere in the same direction. 



Pasteurization (pas'ter-I-za'shwn) : a 



Ccess for checking growth of 

 teria in fluids by heating. 

 Perpendicular (pur'pen-dlk'u-ldr) : in 



the line of gravity or at right 



angles to a surface. 

 Perspiration (pur'spf-ra'srmn) : fluid 



excreted by sweat glands. 

 Phenomenon (fe-n6m'e-n6n) (pi. 



phenomena) : a happening or 



event. 

 Phosphorus (f6s'f<5r-#s) : a chemical 



element which burns at a low 



temperature. 

 Physiology (fiz'I-Sl'6-jI) : the study 



of the structures of the body and 



how they work. 

 Piccard (pe"'kar'): Belgian scientist 



who made the first trip into the 



stratosphere in a closed gondola. 

 Pistil (pls'tll) : the central structure 



of a flower, which contains the 



ovary. 

 Pituitary (pi-tu'I-ta-rf) : a ductless 



gland. 

 Pneumonia (nu-mo'nl-d) : a disease 



characterized by inflammation of 



the lungs. 

 Pollen (pSl'Sn) : fine dust grains 



from the anthers of flowers. 

 Pollination (p61'I-na'sh#n) : the 



transfer of pollen of one flower to 



the stigma of another. 

 Prism (prlz'm) : a body with 



similar ends and rectangular faces. 

 Propaganda (prbp'd-gan'dd) : an 



organization for spreading a par- 

 ticular system of principles. 

 Protein (pro'te"-m) : food material 

 containing carbon, hydrogen, oxy- 

 gen, and nitrogen. Foods con- 

 taining proteins are meat and 



Proton (pro'tSn) : the part (nucleus) 

 of the atom that has a positive 

 electric charge. 



Quantum (kw6n't#m) : 

 quantity. 



a certain 



Radiant (ra'dl-ant) : given out or 



emitted by rays. 



Radiation (ra'dl-a'shwn) : the trans- 

 fer of energy across space, as heat 



and light from the sun. 

 Reflection (re'-fle'k'slmn) : turning or 



bending back. 

 Refraction (re-frak'sMn) : bending 



of a ray going obliquely from one 



medium into another in which the 



velocity is different. 

 Refrigeration (rg-frlj'er-a'shwn) : a 



process of cooling. 

 Refrigerator (re"-frij'er-a-ter) : a box 



or room for keeping things cool. 

 Respiration (reVpI-ra'sh&n) : act of 



breathing. 

 Retina (reVi-nd) : the membrane of 



the eye which receives the image. 

 Rigel (rl'jel) : a first magnitude star 



in the constellation Orion. 

 Rotate (ro'tat) : to turn. 



Secretion (se-kre'shwn) : material 



separated and discharged by cells. 

 Sedimentary rocks (se'd'I-meVtd-rf) : 



rocks formed from deposits made 



under water. 



Soluble (sol'u-bT) : to dissolve. 

 Solution (so-lu'sh&n) : a liquid in 



which a solid or a gas has dis- 

 solved. 

 Solvent (s6l'vent) : having power of 



dissolving. 

 Spectroscope (spSk'tro-skSp) : an 



instrument for forming spectra. 

 Sperm (spurm) : male reproductive 



cell. 

 Spherical (sfSr'I-kal) : globular in 



form. 

 Stalactite (std-lak'tit) : a formation 



of calcium carbonate, resembling 



an icicle. 



