the uniting of dispersed suspended particles into larger particles which settle rapidly. Advertisements
a machined metal joint that fits tightly without gasket or packing.
a large sewer, or conduit, which receives the discharges from many smaller tributary sewers. Sometimes called a trunk sewer.
a single-cut (tapered or blunt) file which acquired its name from its early use in filing mill or circular saws. It is thinner than the ordinary hand file.
1. a removable door or panel in a cover area over a valve handle. Slang expression. 2. cover for an opening which was to be used for a valve, faucet or spray. 3. a cover for the hole in a sink which would have been used for the spray.
a blue colored matter from lichens that turns red in acid solutions and remains blue in alkaline solutions and is used as an acid-base indicator.
a colorless, tasteless, odorless gas in the atmosphere and is used in oxyacetylene and oxyhydrogen flames in welding and cutting metals and other metallurgical processes in chemical industries and combustion processes.