25-letter words containing h, r, d, i, a
- medical officer of health — a person appointed by a local or national authority to be in charge of its health policy
- methylrosaniline chloride — gentian violet.
- never do things by halves — If you say that someone never does things by halves, you mean that they always do things very thoroughly.
- non-algorithmic procedure — heuristic
- not for the faint-hearted — If you say that something is not for the faint-hearted, you mean that it is an extreme or very unusual example of its kind, and is not suitable for people who like only safe and familiar things.
- nuffield teaching project — (in Britain) a complete school programme in mathematics, science, languages, etc, with suggested complementary theory and practical work
- on the horns of a dilemma — one of the bony, permanent, hollow paired growths, often curved and pointed, that project from the upper part of the head of certain ungulate mammals, as cattle, sheep, goats, or antelopes.
- on the understanding that — with the condition that; providing
- oxidative phosphorylation — the aerobic synthesis, coupled to electron transport, of ATP from phosphate and ADP.
- preferred ordinary shares — shares issued by a company that rank between preference shares and ordinary shares in the payment of dividends
- ram's-head lady's-slipper — a rare, slender-stemmed orchid, Cypripedium arietinum, of northeastern North America, that has crimson-streaked, whitish-lipped flowers with purple sepals and grows in moist soil.
- rate monotonic scheduling — (algorithm) A means of scheduling the time allocated to periodic hard-deadline real-time users of a resource. The users are assigned priorities such that a shorter fixed period between deadlines is associated with a higher priority. Rate monotonic scheduling provides a low-overhead, reasonably resource-efficient means of guaranteeing that all users will meet their deadlines provided that certain analytical equations are satisfied during the system design. It avoids the design complexity of time-line scheduling and the overhead of dynamic approaches such as earliest-deadline scheduling.
- read someone the riot act — If someone in authority reads you the riot act, they tell you that you will be punished unless you start behaving properly.
- rehabilitation department — a government department set up after World War II to assist ex-servicemen
- ruby-throated hummingbird — a small hummingbird, Archilochus colubris, the only hummingbird of eastern North America, having metallic-green upper plumage and a bright red throat in the male.
- stand in a person's light — to stand so as to obscure a person's vision
- take sth under advisement — If someone in authority takes a matter under advisement, they decide that the matter needs to be considered more carefully, often by experts.
- tetragonal trisoctahedron — Geometry. a trisoctahedron the faces of which are quadrilaterals; trapezohedron.
- the empire state building — a very high skyscraper in New York City
- the industrial revolution — the transformation in the 18th and 19th centuries of first Britain and then other W European countries and the US into industrial nations
- the sands are running out — there is not much time left before death or the end
- thermodynamic equilibrium — the condition of an isolated system in which the quantities that specify its properties, such as pressure, temperature, etc, all remain unchanged
- thermodynamic temperature — temperature defined in terms of the laws of thermodynamics and not in terms of the properties of any real material. It is usually expressed on the Kelvin scale
- thermoluminescence dating — a method of dating archaeological specimens, chiefly pottery, by measuring the radiation given off by ceramic materials as they are heated.
- throw one's weight around — the amount or quantity of heaviness or mass; amount a thing weighs.
- to be in the catbird seat — to be in a very good situation
- to be in the driving seat — If you say that someone is in the driving seat, you mean that they are in control in a situation.
- to drink someone's health — When you drink to someone's health or drink their health, you have a drink as a sign of wishing them health and happiness.
- to read between the lines — If you read between the lines, you understand what someone really means, or what is really happening in a situation, even though it is not said openly.
- to take something as read — If you take something as read, you accept it as true or right and therefore feel that it does not need to be discussed or proved.
- track and field athletics — a collection of sporting events that involve running, sprinting, throwing, jumping and walking
- transcendental-philosophy — transcendental character, thought, or language.
- tribasic sodium phosphate — sodium phosphate (def 3).
- under the aegis of sb/sth — Something that is done under the aegis of a person or organization is done with their official support and backing.
- undisputed world champion — a boxer who holds the World Boxing Association, the World Boxing Council, the World Boxing Organization, and the International Boxing Federation world championship titles simultaneously
- vertical redundancy check — (storage, communications) (VRC) An error checking method performed on one 8-bit ASCII character, where the 8th bit is used as the parity bit. The resulting parity bit is constructed by XORing the word. The result is a "1" if there is an odd number of 1s, and a "0" if there is an even number of 1s in the word. This method is unreliable because if an odd number of bits are distorted, the check will not detect the error. The Longitudinal Redundancy Check is an improvement.
- war of the grand alliance — the war (1689–97) in which England, the Netherlands, Spain, Sweden, and the Holy Roman Empire in league with Bavaria, Brandenburg, Savoy, and the Palatinate opposed France.
- what is sb/sth doing here — If you ask what someone or something is doing in a particular place, you are asking why they are there.
- white sands missile range — a U.S. Army military testing ground for rockets and guided missiles in SW New Mexico, W of Alamogordo.
- world health organization — an agency of the United Nations, established in 1948, concerned with improving the health of the world's people and preventing or controlling communicable diseases on a worldwide basis through various technical projects and programs. Abbreviation: WHO.