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18-letter words containing n, a, p, r, t, h

  • hamilton's problem — Hamiltonian problem
  • harnessed antelope — any African antelope of the genus Tragelaphus, especially the bushbuck, having the body marked with white stripes and spots that resemble a harness, and, in the male, long, gently spiraling horns.
  • hearing impairment — partial deafness
  • helicopter station — a place where helicopters are kept in readiness for use
  • historical present — the present tense used in narrating a past event as if happening at the time of narration.
  • human rights group — a group that campaigns for human rights
  • hydroxynaphthalene — naphthol.
  • hydroxytryptamines — Plural form of hydroxytryptamine.
  • hyper-intellectual — appealing to or engaging the intellect: intellectual pursuits.
  • hyperaldosteronism — aldosteronism.
  • hyperconcentration — the act of concentrating; the state of being concentrated.
  • hypernationalistic — a person devoted to nationalism.
  • hyperproliferation — (biology) An abnormally high rate of proliferation of cells by rapid division.
  • hypersensitization — Photography. to treat (a film or emulsion) so as to increase its speed.
  • hypersexualisation — Alternative spelling of hypersexualization.
  • hypersexualization — The act or process of hypersexualizing.
  • in comparison with — when compared to
  • in the first place — firstly
  • inner automorphism — an automorphism that maps an element x into an element of the form axa −1 where a −1 is the inverse of a.
  • inter-relationship — reciprocal relation.
  • interrelationships — Plural form of interrelationship.
  • iron (ii) sulphate — an iron salt with a saline taste, usually obtained as greenish crystals of the heptahydrate, which are converted to the white monohydrate above 100°C: used in inks, tanning, water purification, and in the treatment of anaemia. Formula: FeSO4
  • japanese artichoke — Chinese artichoke.
  • lake pontchartrain — a shallow lagoon in SE Louisiana, linked with the Gulf of Mexico by a narrow channel, the Rigolets: resort and fishing centre. Area: 1620 sq km (625 sq miles)
  • many happy returns — When it is someone's birthday, people sometimes say 'Many happy returns' to them as a way of greeting them.
  • maternity hospital — birthing facility
  • miniature pinscher — one of a German breed of toy dogs resembling a smaller version of the Doberman pinscher, having a flat skull, a smooth coat, erect ears, and a docked tail, bred originally as a watchdog.
  • moccasin telegraph — the transmission of rumour or secret information; the grapevine
  • monophosphorylated — (biochemistry) phosphorylated with a single unit of phosphoric acid.
  • morphine addiction — the fact or condition of being addicted to morphine
  • natural philosophy — natural science.
  • nebular hypothesis — the theory that the solar system evolved from a mass of nebular matter: prominent in the 19th century following its precise formulation by Laplace.
  • neo-pythagoreanism — a philosophical system, established in Alexandria and Rome in the second century b.c., consisting mainly of revived Pythagorean doctrines with elements of Platonism and Stoicism.
  • neuroophthalmology — the branch of ophthalmology that deals with the optic nerve and other nervous system structures involved in vision.
  • north polar region — the region of land and water surrounding the North Pole.
  • north truchas peak — a mountain in N New Mexico, near Santa Fe: one of the three Truchas Peaks. 13,110 feet (3999 meters).
  • not a pretty sight — If you say that someone or something is not a pretty sight, you mean that it is not pleasant to look at.
  • octachlorobiphenyl — (organic compound) Either of twelve isomers of the polychlorinated biphenyl containing eight chlorine atoms.
  • open heart surgery — surgery performed on the exposed heart while a heart-lung machine pumps and oxygenates the blood and diverts it from the heart.
  • open-heart surgery — surgery performed on the exposed heart while a heart-lung machine pumps and oxygenates the blood and diverts it from the heart.
  • optical brightener — an additive that dyes and brightens fabric or paper
  • paint the town red — a substance composed of solid coloring matter suspended in a liquid medium and applied as a protective or decorative coating to various surfaces, or to canvas or other materials in producing a work of art.
  • palaeoanthropology — the branch of anthropology concerned with primitive man
  • parachute regiment — an airborne regiment of an army
  • paraglyph printing — the printing of the positive and negative of a radiograph superimposed in slight misalignment to give the effect of a relief.
  • parathyroid glands — any of several small oval glands usually lying near or embedded in the thyroid gland.
  • paraurethral gland — any of a group of vestigial glands located in the posterior wall of the urethra in women.
  • pass the hat round — to collect money, as for a cause
  • pathname separator — (file system)   The character used to separate elements of a path or pathname. Under Unix and POSIX.1 compliant systems the pathname separator is the (forward) slash, in MS-DOS backslash serves the same purpose. For obvious reasons the no directory or file name can contain this character.
  • patron of the arts — someone who acts as a patron to or supports charities, organizations, and individuals that work in or concern the arts
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