15-letter words containing l, e, f, t
- waterfall model — (programming) A software life-cycle or product life-cycle model, described by W. W. Royce in 1970, in which development is supposed to proceed linearly through the phases of requirements analysis, design, implementation, testing (validation), integration and maintenance. The Waterfall Model is considered old-fashioned or simplistic by proponents of object-oriented design which often uses the spiral model instead. Earlier phases are sometimes called "upstream" and later ones "downstream". Compare: iterative model.
- waterford glass — fine cut or gilded glass made in Waterford, Ireland, having a slight blue cast due to the presence of cobalt.
- welfare statism — the belief in or practices of a welfare state.
- well-formulated — to express in precise form; state definitely or systematically: He finds it extremely difficult to formulate his new theory.
- well-identified — to recognize or establish as being a particular person or thing; verify the identity of: to identify handwriting; to identify the bearer of a check.
- well-thought-of — highly esteemed; of good reputation: a well-thought-of scholar; This new book is well-thought-of.
- west nile fever — a viral disease, caused by a flavivirus and spread by a mosquito (Culex pipiens), that results in encephalitis
- white zinfandel — a medium-sweet rosé wine made from zinfandel grapes.
- winter flounder — any of various popular food flatfishes, as Parophrys vetulus of the Pacific (English sole) and Pseudopleuronectes americanus of the Atlantic (winter flounder or blackback flounder)
- wish fulfilment — (in Freudian psychology) any successful attempt to fulfil a wish stemming from the unconscious mind, whether in fact, in fantasy, or by such disguised means as sublimation
- wolf-rayet star — a very hot (35,000–100,000 K) and luminous star in the early stages of evolution, with broad emission lines in its spectrum.
- wrongful arrest — the act of arresting someone without proper reason
- yellow goatfish — a schooling goatfish, Mulloidichthys martinicus, inhabiting the Atlantic Ocean from Florida to Panama.