17-letter words containing s, e, l, f, i
- the first line of — If you refer to a method as the first line of, for example, defence or treatment, you mean that it is the first or most important method to be used in dealing with a problem.
- the life and soul — a person regarded as the main source of merriment and liveliness
- the life sciences — sciences such as biology, botany, physiology, zoology which are concerned with the study of living organisms
- thermal diffusion — the separation of constituents, often isotopes, of a fluid under the influence of a temperature gradient.
- thistle butterfly — any nymphalid butterfly of the genus Vanessa, as the red admiral or painted lady.
- troilus butterfly — spicebush swallowtail.
- unclassified road — a road that has not been given a grade because it is of a basic standard
- unofficial strike — a strike that is not approved by the strikers' trade union
- unprofessionalism — not professional; not pertaining to or characteristic of a profession.
- unselfconsciously — in an unselfconscious manner
- veiltail goldfish — an artificially bred, indoor variety of goldfish, usually golden or calico and of a spheroid shape, having a fully divided, drooping tail fin exceeding the body in length.
- ventilation shaft — a shaft in a mine, tunnel, or building used for providing ventilation or fresh air
- welfare economics — a branch of economics concerned with improving human welfare and social conditions chiefly through the optimum distribution of wealth, the relief or reduction of unemployment, etc.