17-letter words containing f, a, l, s, e, h
- thermal diffusion — the separation of constituents, often isotopes, of a fluid under the influence of a temperature gradient.
- to fan the flames — If someone or something fans the flames of a situation or feeling, usually a bad one, they make it more intense or extreme in some way.
- 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
- walleye surfperch — a common black and silvery surfperch (Hyperprosopon argenteum) found off the coast of California