20-letter words containing h, o, l, p, r, a
- spherical aberration — variation in focal length of a lens or mirror from center to edge, due to its spherical shape.
- spherical coordinate — Usually, spherical coordinates. any of three coordinates used to locate a point in space by the length of its radius vector and the angles this vector makes with two perpendicular polar planes.
- spiral of archimedes — a curve that is the locus of a point that moves outward with uniform speed along a vector, beginning at the origin, while the vector rotates about the origin with uniform angular velocity. Equation (in polar coordinates): r = aθ.
- state highway patrol — a state's road traffic police
- the legal profession — the profession of law
- to scrape the barrel — If you say that someone is scraping the barrel, or scraping the bottom of the barrel, you disapprove of the fact that they are using or doing something of extremely poor quality.
- trumpet call for sth — a signal for something
- working relationship — a relationship with a colleague, boss or employee