18-letter words containing f, a, l, c, d
- plane of incidence — a plane determined by a given ray, incident on a surface, and the normal at the point where the incident ray strikes the surface.
- play second fiddle — be considered less important
- provably difficult — The set or property of problems for which it can be proven that no polynomial-time algorithm exists, only exponential-time algorithms.
- put a bold face on — to seem bold or confident about
- reinforced plastic — plastic with fibrous matter, such as carbon fibre, embedded in it to confer additional strength
- schofield barracks — a town on central Oahu, in central Hawaii.
- school for scandal — a comedy of manners (1777) by Richard Brinsley Sheridan.
- self-contradiction — an act or instance of contradicting oneself or itself.
- self-contradictory — an act or instance of contradicting oneself or itself.
- self-deprecatingly — in a self-deprecating manner
- self-transcendence — the quality or state of being transcendent.
- sildenafil citrate — a white crystalline powder, C 22 H 30 N 6 O 4 S, that temporarily normalizes erectile function of the penis by blocking an enzyme known to inhibit the production of a chemical that causes erections: used in the form of a pill to treat impotence.
- spotted flycatcher — a European woodland songbird, Muscicapa striata, with a greyish-brown streaked plumage: family Muscicapidae (Old World flycatchers)
- sulfuric anhydride — sulfur trioxide.
- ur of the chaldees — the city where Abraham was born, sometimes identified with the Sumerian city of Ur. Gen. 11:28, 31; 15:7; Neh. 9:7.
- vicar of wakefield — a novel (1766) by Goldsmith.
- wildlife sanctuary — an area where wild animals and plants are protected