A tool used in machining fields, especially milling, to aid in setup. It is a block of steel that is precisely squared and parallel whose sides are 1, 2, and 3 inches long, respectively. May contain arranged holes. Similar, larger blocks are called 2-4-6 blocks.

plural of 1-2-3 block

(chemistry) Any polyunsaturated fatty acid having a double bond between the third and fourth carbon atoms from the end of the molecule farthest from the carboxylic acid; they are found in green vegetables and in the oils of fish such as salmon and mackerel; they are essential fatty acids, and seem to be beneficial in reducing the risk of heart disease.

Abbreviation of omega-3 fatty acid.

plural of ω-3 fatty acid

plural of omega-3 fatty acid

plural of 501(c)(3)

(Internet) The predicted third generation of the World Wide Web, usually conjectured to include semantic tagging of content and decentralized protocols.

plural of 33

plural of 360