15-letter words containing h, a, p, o
- gramophonically — in a gramophonic manner
- grandparenthood — The state of being a grandparent.
- grapes of wrath — a novel (1939) by John Steinbeck.
- graph colouring — (application) A constraint-satisfaction problem often used as a test case in research, which also turns out to be equivalent to certain real-world problems (e.g. register allocation). Given a connected graph and a fixed number of colours, the problem is to assign a colour to each node, subject to the constraint that any two connected nodes cannot be assigned the same colour. This is an example of an NP-complete problem. See also four colour map theorem.
- graph reduction — A technique invented by Chris Wadsworth where an expression is represented as a directed graph (usually drawn as an inverted tree). Each node represents a function call and its subtrees represent the arguments to that function. Subtrees are replaced by the expansion or value of the expression they represent. This is repeated until the tree has been reduced to a value with no more function calls (a normal form). In contrast to string reduction, graph reduction has the advantage that common subexpressions are represented as pointers to a single instance of the expression which is only reduced once. It is the most commonly used technique for implementing lazy evaluation.
- graphologically — In terms of or by means of graphology.
- grasshopper pie — a custardlike pie, flavored and colored with green crème de menthe and served in a graham-cracker crust.
- group therapist — a psychotherapist who conducts group therapy
- gynandromorphic — (of an organism) Having male and female characteristics.
- halting problem — The problem of determining in advance whether a particular program or algorithm will terminate or run forever. The halting problem is the canonical example of a provably unsolvable problem. Obviously any attempt to answer the question by actually executing the algorithm or simulating each step of its execution will only give an answer if the algorithm under consideration does terminate, otherwise the algorithm attempting to answer the question will itself run forever. Some special cases of the halting problem are partially solvable given sufficient resources. For example, if it is possible to record the complete state of the execution of the algorithm at each step and the current state is ever identical to some previous state then the algorithm is in a loop. This might require an arbitrary amount of storage however. Alternatively, if there are at most N possible different states then the algorithm can run for at most N steps without looping. A program analysis called termination analysis attempts to answer this question for limited kinds of input algorithm.
- hapax legomenon — a word or phrase that appears only once in a manuscript, document, or particular area of literature.
- hardhead sponge — any of several commercial sponges, as Spongia officinalis dura, of the West Indies and Central America, having a harsh, fibrous, resilient skeleton.
- haulage company — a firm that transports goods by lorry
- hausdorff space — a topological space in which each pair of points can be separated by two disjoint open sets containing the points.
- have (down) pat — to know or have memorized thoroughly
- have one's pick — If you have your pick of a group of things, you are able to choose any of them that you want.
- have to lump it — If you say that someone will have to lump it, you mean that they must accept a situation or decision whether they like it or not.
- heart operation — a surgical operation performed on the heart
- heart tamponade — tamponade (def 2).
- height-to-paper — the standard height of type, measured from the foot to the face, in the U.S. 0.918 of an inch (2.33 cm).
- hematoporphyria — porphyria.
- hematoporphyrin — a porphyrin made by treating haemoglobin with acid, used to treat cancer in photodynamic therapy
- hepaticological — of or relating to hepaticology
- hepatocarcinoma — (pathology) cancer of the liver.
- hermaphroditism — the condition of being a hermaphrodite.
- herod agrippa i — 10 bc–44 ad, king of Judaea (41–44), grandson of Herod (the Great). A friend of Caligula and Claudius, he imprisoned Saint Peter and executed Saint James
- hexachlorophene — a white, crystalline powder, C 13 Cl 6 H 6 O 2 , insoluble in water: used as an antibacterial agent chiefly in toothpastes and soaps.
- histopathologic — the science dealing with the histological structure of abnormal or diseased tissue; pathological histology.
- historiographer — a historian, especially one appointed to write an official history of a group, period, or institution.
- historiographic — the body of literature dealing with historical matters; histories collectively.
- hit the jackpot — the chief prize or the cumulative stakes in a game or contest, as in bingo, a quiz contest, or a slot machine.
- holding company — a company that controls other companies through stock ownership but that usually does not engage directly in their productive operations (distinguished from parent company).
- holding paddock — a paddock in which cattle or sheep are kept temporarily, as before shearing, etc
- holding pattern — a traffic pattern for aircraft at a specified location (holding point) where they are ordered to remain until permitted to land or proceed.
- holographically — In a holographic way.
- homeopathically — By means of homeopathy.
- homoerotophobia — Homophobia; antipathy towards homosexuals.
- hopper casement — a casement with a sash hinged at the bottom.
- hospital corner — a fold on a bed sheet or blanket made by tucking the foot or head of the sheet straight under the mattress with the ends protruding and then making a diagonal fold at the side corner of the sheet and tucking this under to produce a triangular corner.
- hospital doctor — a hospital doctor works in a hospital, rather than as a general practitioner, in the army, etc
- hospitalisation — (British) alternative spelling of hospitalization.
- hospitalization — the act, process, or state of being hospitalized.
- hot-dip coating — the process of coating sheets of iron or steel with molten zinc.
- house of prayer — house of God.
- house physician — a house officer working in a medical as opposed to a surgical discipline
- human geography — the study of the interaction between human beings and their environment in particular places and across spatial areas.
- human megaphone — the technique of using a crowd of people to repeat a speaker's words in unison
- hump one's swag — (of a tramp) to carry one's belongings from place to place on one's back
- humpback salmon — a pink salmon inhabiting North Pacific waters: so-called because of the hump that appears behind the head of the male when it is ready for spawning.
- humphrey bogart — Humphrey (DeForest) ("Bogie"or"Bogey") 1899–57, U.S. motion-picture actor.