20-letter words containing b, a, c, h, n
- spherical aberration — variation in focal length of a lens or mirror from center to edge, due to its spherical shape.
- splice the mainbrace — to issue and partake of an extra allocation of alcoholic spirits
- stare sb in the face — If a situation or the answer to a problem is staring you in the face, it is very obvious, although you may not be immediately aware of it.
- step into the breach — If you step into the breach, you do a job or task which someone else was supposed to do or has done in the past, because they are suddenly unable to do it.
- tchebycheff equation — a differential equation of the form (1 − x 2) d 2 y/dx 2 − x dy/dx + n 2 y = 0, where n is any nonnegative integer.
- tetrahydrocannabinol — a compound, C 21 H 30 O 2 , that is the physiologically active component in cannabis preparations (marijuana, hashish, etc.) derived from the Indian hemp plant or produced synthetically. Abbreviation: THC.
- the canterbury tales — an uncompleted sequence of tales by Chaucer, written for the most part after 1387.
- therapeutic abortion — abortion performed when a woman's pregnancy endangers her health.
- to blow hot and cold — If someone blows hot and cold, they keep changing their attitude towards something, sometimes being very enthusiastic and at other times expressing no interest at all.
- watch someone's back — the rear part of the human body, extending from the neck to the lower end of the spine.
- wilson cloud chamber — cloud chamber.