15-letter words containing a, h, e, p
- echocardiograph — an instrument employing reflected ultrasonic waves to examine the structures and functioning of the heart.
- edmund randolph — A(sa) Philip, 1889–1979, U.S. labor leader: president of the Brotherhood of Sleeping Car Porters 1925–68.
- edriophthalmian — edriophthalmous
- edriophthalmous — (of certain crustaceans) having stalkless eyes
- electromyograph — A device used in electromyography to generate electromyograms.
- elephant's-foot — a monocotyledonous plant, Testudinaria elephantipes, of southern Africa, with a very large starchy tuberous stem, covered in corky scales: family Dioscoreaceae
- eleutherophobia — the fear of freedom
- enantiomorphism — (chemistry) The relationship exhibited by a pair of enantiomorphs.
- enantiomorphous — Of or pertaining to enantiomorphs or enantiomorphism; enantiomorphic.
- encephalization — (biology) the amount of brain mass exceeding that related to an animal's total body mass.
- encephalography — Any of various techniques for recording the structure or electrical activity of the brain.
- encephalopathic — Relating to encephalopathy.
- endolymphangial — (anatomy) Within a lymphatic vessel.
- english sparrow — a small Eurasian weaverbird, Passer domesticus, now established in North America and Australia. It has a brown streaked plumage with grey underparts
- english speaker — a person who speaks English as a first, or second mother tongue
- enterohepatitis — dual inflammation of the intestine and liver
- epikeratophakia — The surgical correction of aphakia. It is a refractive surgical procedure in which a donor cornea is transplanted to the anterior surface of the patient's cornea. A lamellar disc from a donor cornea is placed over the de-epithelialized host cornea and sutured into a prepared groove on the host cornea.
- ergatandromorph — an ant with the characteristics of both worker and male
- euphemistically — In a euphemistic manner.
- fahnestock clip — a type of terminal using a spring that clamps readily onto a connecting wire.
- finger alphabet — a series of shapes made by the fingers that indicate letters of an alphabet and can be used in fingerspelling for the deaf
- fluorophosphate — a salt or ester of a fluorophosphoric acid.
- for their pains — You say that something was all you got for your pains when you are mentioning the disappointing result of situation into which you put a lot of work or effort.
- franz joseph ii — 1906–1989, prince of Liechtenstein 1938–89.
- free atmosphere — the part of the atmosphere that lies above the frictional influence of the earth's surface.
- french-speaking — able to speak French
- fusospirochetal — Relating to fusospirochetes.
- gaia hypothesis — a model of the earth as a self-regulating organism, advanced as an alternative to a mechanistic model.
- geodemographics — the study and grouping of the people in a geographical area according to socioeconomic criteria, esp for market research
- geostrophically — By means of, or in terms of, geostrophy.
- german shepherd — one of a breed of large shepherd dogs having a coat ranging in color from gray to brindled, black-and-tan, or black, used especially in police work and as a guide for the blind.
- gestalt therapy — holistic psychotherapy
- gigantopithecus — a genus of extinct ape of southern Asia existing during the Pliocene and Pleistocene epochs, known only from very large fossil jaws and teeth and believed to be perhaps the biggest hominoid that ever lived.
- give them heaps — to contend strenuously with an opposing sporting team
- golden pheasant — an Asiatic pheasant, Chrysolophus pictus, having brilliant scarlet, orange, gold, green, and black plumage.
- golden samphire — a Eurasian coastal plant, Inula crithmoides, with fleshy leaves and yellow flower heads: family Asteraceae (composites)
- grandparenthood — The state of being a grandparent.
- grapes of wrath — a novel (1939) by John Steinbeck.
- 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.
- graphic granite — a pegmatite that has crystals of gray quartz imbedded in white or pink microcline in such a manner that they resemble cuneiform writing.
- 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
- hair specialist — an expert in the treatment and care of human hair
- half-wave plate — a crystal thin enough to cause a phase difference of 180° between the ordinary and extraordinary rays of polarized light, thereby changing the direction of the plane of polarization.
- 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.
- hampstead heath — a popular recreation area near Hampstead in N London
- 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.
- hardship clause — a clause in a contract which covers unforeseen events that would make it more difficult for one party to complete the contract, and in which case offers alternative terms
- hardy perennial — a plant that lasts three seasons or more and that can withstand freezing temperatures