GLOSSARY OF IMPORTANT TERMS 



The diacritical marks are those used in the Webster school dictionaries. 



Absorbed (ab-sorbd') : taken in. 



Accommodation (a-k6m'6-da'shwn) : 

 adapting the lens of the eyes for 

 near and distant vision. 



Adaptation (ad'ap-ta'shwn) : modifi- 

 cation of a plant or animal fitting 

 it more perfectly to live in its 

 environment. 



Alkali (al'kd-ll) : a substance having 

 marked basic qualities, including 

 ability to turn red litmus blue. 



Ammonium chloride (a-mo'nl-#m 

 klo'rid) : a chemical compound. 



Amphibian (am-ftb'I-tm) : an animal 

 that spends part of its life in the 

 water and part on land, as frogs 

 and toads. 



Aphid (a'ftd) : a plant louse. 



Aquarium (d-kwa'rl-#m) : a glass 

 tank of water. 



Archimedes (ar'M-me'dez) : a Greek 

 scientist. 



Arcturus (ark-tu'r#s) : a first-magni- 

 tude star. 



Artery (ar'ter-I) : one of the large 

 tubes which carry blood from the 

 heart to various parts of the body. 



Astigmatism (d-stlg'md-tfz'm) : a 

 defect of the eye which causes 

 imperfect images. 



Astrologer (as-tr6l'6-jer) : one pro- 

 fessing to foretell events by aspects 

 of the stars. 



Astronomer (as-tr6n'6-mer) : one 

 having knowledge of the heavenly 

 bodies. 



Atom (at'#m) : the smallest particle 

 of a substance that can exist. 



Atomizer (at'&m-lz'er) : an instru- 

 ment to make a fine spray. 



Bacteria (bak-te'ri-d) : a certain 



group of microscopic plants, some 



of which cause diseases. 

 Bacteriologist (bak-te'ri-61'6-jM) : an 



expert in the study of bacteria. 

 Bootes (b6-6'tez) : the constellation 



containing Arcturus. 

 Brontpsaurus (br6n't6-so'rws) : an 



extinct animal of huge size. 

 Buoy (boi) : to keep from sinking. 



Calorie (kal'6-rf) : the amount of 

 heat necessary to warm 1 kilogram 

 of water 1 C. or about 4 pounds 

 of water 1 F. 



Calorimeter (kal'o-rnii'e'-ter) : appa- 

 ratus for measuring amount of 

 heat in foods. 



Calyx (ka'llks): the outer floral 

 leaves of a flower. All the sepals 

 taken together. 



Capillaries (kap'I-la-rlz) : fine, hair- 

 like tubes ; the very small blood 

 vessels through which the blood 

 flows from the arteries to the 

 veins. 



Carbohydrate (kar'b6-hl'drat) : a 

 group of compounds containing 

 carbon, hydrogen, and oxygen, as 

 sugar and starch. 



Carnivorous (kar-nlv'6-rws) : living 

 on flesh. 



Cartilage (kar'tl-laj) : a translucent 

 elastic tissue. 



Cassiopeia (kiis'I-6-pe'ya) : name of 

 a constellation. 



Celestial (sg-leVchal) : pertaining to 

 the sky or visible heavens. 



Cell (sl.) : a small structural unit of 

 which plants and animals are corn- 



Cellophane (sel'6-fan) : a transpar- 

 ent wrapping "paper" having the 

 composition of rayon. 



Centigrade (s&n'tl-grad) : name of 

 metric thermometer, on which the 

 distance between the freezing 

 point and boiling is divided into 

 100 parts or degrees. 



Chaparral (chap'd-ral') : a dense 

 thicket of stiff or thorny shrubs. 



Chlorophyll (klo'ro-fll) : the green 

 coloring matter of plants. 



Circulation (sur'ku-la'sh#n) : the 



Erocess by which oxygen and blood 

 ow to all parts of the body. 

 Combustion (kdm-bus'chtin) : act of 



burning. 

 Compound: substance formed by 



the chemical union of elements. 

 Concave : curving inward like the 

 inside of a ball. 



H. & w. sci. i 28 



417 



