APPENDIX E 



GLOSSARY OF TERMS 



ABRADED STRENGTH - The result when tested in accordance with ASTM D1682, 

 "Breaking Load and Elongation of Textile Fabric, 1-Inch Ravelled Strip 

 Method". One-inch square jaws at a constant rate of traverse of 12 inches 

 per minute. 



ABRASION RESISTANCE - The ability of a surface to resist wear by friction. 



ALKALINE - The excess of hydroxyl ions over hydrogen ions. Seawater is 

 usually alkaline. 



ALKALINITY - The capacity of a water to accept protons, i.e., hydrogen ions. 

 It is usually expressed as milliequivalents per liter. 



ANAEROBIC - An oxygen-independent type of respiration. 



ANNEAL - To subject to high heat, with subsequent cooling, so as to soften 

 thoroughly and render less brittle. 



ANODE - The positive pole or electrode of an electrolytic cell. 



AQUATIC - Growing or living in, or frequenting, water as opposed to ter- 

 restrial. 



ARMOR - The outer or exposed layer of material (s) (stones, blocks, etc.) in 

 a protective structure subjected to attack by wave or scour forces. 



AUSTENITIC - Having a solid solution of carbon or iron carbide in iron as a 

 constituent of steel under certain conditions. 



BANK - (1) The rising ground bordering a lake, river, or sea; of a river or 

 channel, designated as right or left as it would appear facing downstream. 

 (2) An elevation of the sea floor of large area, located on a Continental 

 (or island] Shelf and over which the depth is relatively shallow but 

 sufficient for safe surface navigation; a group of shoals. (3) In its 

 secondary sense, a shallow area consisting of shifting forms of silt, 

 sand, mud, and gravel, but in this case it is only used with a qualifying 

 word such as "sandbank" or "gravelbank". 



BASIN, BOAT - A naturally or artificially enclosed or nearly enclosed harbor 

 area for small craft. 



BATHYMETRY - The measurement of depths of water in oceans, seas, and lakes; 

 also information derived from such measurements. 



BAY - A recess in the shore or an inlet of a sea hetween two capes or head- 

 lands, not as large as a gulf but larger than a cove. 



BEACH - The zone of unconsolidated material that extends landward from the 

 low water line to the place where there is marked change in material or 

 physiographic form, or to the line of permanent vegetation (usually the 

 effective limit of storm waves). The seaward limit of a beach - unless 

 otherwise specified - is the mean low water line. 



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