19-letter words containing h, o, t, a
- beta-naphthyl group — See under naphthyl.
- betamethyl acrolein — crotonaldehyde.
- blast from the past — You can use a blast from the past as a light-hearted way of referring to something such as an old song or fashion that you hear or notice again, and which reminds you of an earlier time.
- blow the gaffe/gaff — If you blow the gaffe or blow the gaff, you tell someone something that other people wanted you to keep secret.
- booker t washington — Booker T(aliaferro) [boo k-er tol-uh-ver] /ˈbʊk ər ˈtɒl ə vər/ (Show IPA), 1856–1915, U.S. reformer, educator, author, and lecturer.
- bottomhole assembly — The bottomhole assembly is the lower part of a drill string, which has the drill bit and mud motor.
- bound hand and foot — with hands and feet tied
- breach of the peace — A breach of the peace is noisy or violent behaviour in a public place which is illegal because it disturbs other people.
- breath of fresh air — sth new
- briggsian logarithm — common logarithm.
- brush-tailed possum — any of several widely-distributed Australian possums of the genus Trichosurus
- bulbourethral gland — Cowper's gland
- cannot help oneself — to be the victim of circumstances, a habit, etc.
- cash-flow statement — a financial statement that shows a company's cash disbursements and receipts over a given period
- cast one's lot with — one of a set of objects, as straws or pebbles, drawn or thrown from a container to decide a question or choice by chance.
- catch someone's eye — If something catches your eye, you suddenly notice it.
- catherine of aragon — 1485–1536, first wife of Henry VIII of England and mother of Mary I. The annulment of Henry's marriage to her (1533) against papal authority marked an initial stage in the English Reformation
- cathodic protection — a technique for protecting metal structures, such as steel ships and pipelines, from electrolytic corrosion by making the structure the cathode in a cell, either by applying an electromotive force directly or by putting it into contact with a more electropositive metal
- cathodoluminescence — luminescence caused by irradiation with electrons (cathode rays)
- cerebral thrombosis — formation of a clot or other blockage in one of the blood vessels of the brain, often followed by neurologic damage; a type of stroke.
- chamber of deputies — the lower house of the legislature of certain countries, as Italy.
- champagne socialist — a professed socialist who enjoys an extravagant lifestyle
- character generator — a device used in television studios to incorporate text or other symbols into the television screen image.
- characteristic root — a scalar for which there exists a nonzero vector such that the scalar times the vector equals the value of the vector under a given linear transformation on a vector space.
- chassis dynamometer — A chassis dynamometer is a piece of test equipment fitted with rollers for the wheels of a vehicle, that is capable of providing drive input and measuring output such as power and torque at the wheels.
- chemical castration — the use of drugs to reduce libido
- chemolithoautotroph — (biology) A chemoautotroph or lithoautotroph.
- cherenkov radiation — the electromagnetic radiation produced when a charged particle moves through a medium at a greater velocity than the velocity of light in that medium
- chinese tallow tree — tallow tree.
- chlorofluoromethane — any of a series of gaseous or volatile methanes substituted with chlorine and fluorine and containing little or no hydrogen: used as refrigerants and, formerly, as aerosol propellants until scientists became concerned about depletion of the atmospheric ozone layer.
- chloroplatinic acid — a red-brown, crystalline, water-soluble solid, H 2 PtCl 6 ⋅6H 2 O, used chiefly in platinizing glass, metals, and ceramic ware.
- cholecystolithiasis — The presence of a gallstone specifically in the gall bladder.
- choledocholithiasis — The presence of gallstones in the common bile duct.
- christian democracy — the beliefs, principles, practices, or programme of a Christian Democratic party
- christian socialist — a member of any of certain European political parties advocating a form of social organization based on Christian and socialistic principles.
- christmas pantomime — pantomime (def 5).
- chromatographically — With regard to, or by by using chromatography.
- chromoblastomycosis — Long-term fungal infection of the skin and subcutaneous tissue.
- cinematographically — a motion-picture projector.
- clinicopathological — of or relating to the combined study of disease symptoms and pathology.
- cobalt violet light — a pigment used in painting consisting mainly of arsenate of cobalt, characterized chiefly by its violet color, permanence, and poisonous properties.
- cobaltous hydroxide — a rose-red, amorphous, water-insoluble powder, Co 2 O 3 ⋅3H 2 O, used chiefly in the preparation of cobalt salts and in the manufacture of paint and varnish driers.
- coded character set — (character, standard) A mapping, generally 1:1, from a set of integers, known as character codes or code positions, to a set of characters that may include letters, digits, punctuation, control codes, mathematical and typographic symbols. There are several standard coded character sets, the most widely used is ASCII, generally in its Latin-1 dialect, with Unicode becoming slowly more common; while EBCDIC and Baudot are extinct except in legacy systems.
- coherent parallel c — (language) A data parallel version of C.
- collective behavior — the spontaneous, unstructured, and temporary behavior of a group of people in response to the same event, situation, etc.
- columnar epithelium — epithelium consisting of one or more layers of elongated cells of cylindrical or prismatic shape.
- combination therapy — a therapy that combines two or more drugs, or two or more treatments
- come to the surface — to emerge; become apparent
- commission merchant — a person who buys or sells goods for others on a commission basis
- computed tomography — computerized axial tomography. Abbreviation: CT.