19-letter words containing a, g, l, y
- triangle inequality — the theorem that the absolute value of the sum of two quantities is less than or equal to the sum of the absolute values of the quantities.
- typographical error — an error in printed or typewritten matter resulting from striking the improper key of a keyboard, from mechanical failure, or the like.
- ultrahigh frequency — any frequency between 300 and 3000 megahertz. Abbreviation: UHF, uhf.
- valley of the kings — a valley on the west bank of the Nile near the site of Thebes: the necropolis of many of the kings and queens of the 18th and 19th dynasties of ancient Egypt, c1350–c1200 b.c.
- very large database — (database) (VLDB) A database that can use a Very Large Memory model to keep as much data as possible in physical memory. (Oracle http://oracle.com/platforms/dec/collateral/vlmwp_3.html).
- wade-giles (system) — a system for transliterating Chinese ideograms into the Latin alphabet, in wide use esp. before Pinyin was adopted by the People's Republic of China in 1979
- wearable technology — a small computer or advanced electronic device that is worn or carried on the body: the trendiest wearable technologies.
- wireless telegraphy — Now Rare. radiotelegraphy.
- yellow book, jargon — (publication) The print version of the Jargon File, titled "The New Hacker's Dictionary". It includes essentially all the material the File, plus a Foreword by Guy L. Steele, Jr. and a Preface by Eric S. Raymond. Most importantly, the book version is nicely typeset and includes almost all of the infamous Crunchly cartoons by the Great Quux, each attached to an appropriate entry. The first, second, and third editions correspond to versions 2.9.6, 3.0.0, and 4.0.0 of the File, respectively.
- yellow-dog contract — a contract between a worker and an employer in which, as a condition of employment, the worker agrees not to remain in or join a union.
- yellowtail kingfish — a large carangid game fish, Seriola grandis, of S Australian waters