15-letter words containing a, c, n, t, h
- natal horoscope — the horoscope based on an individual's birth.
- nathaniel bacon — Francis (Baron Verulam, Viscount St. Albans) 1561–1626, English essayist, philosopher, and statesman.
- national church — an independent church within a country, usually representing the prevalent religion.
- national school — (in Ireland) a state primary school
- negative charge — a charge that has more electrons than protons and has a lower electrical potential
- nemathelminthic — of or pertaining to a nemathelminth
- netzahualcoyotl — a city in S central Mexico, in the state of Mexico.
- neuropathically — In a neuropathic way.
- neuropathologic — Of or pertaining to neuropathology.
- neuropsychiatry — the branch of medicine dealing with diseases involving the mind and nervous system.
- niche marketing — marketing aimed at a specialized group
- nicholas, saint — Saint ("Nicholas the Great") died a.d. 867, Italian ecclesiastic: pope 858–867.
- nightwatchwoman — (rare) The female equivalent of a nightwatchman.
- non-achievement — lack of achievement
- non-charismatic — of, having, or characteristic of charisma.
- non-mechanistic — of or relating to the theory of mechanism or to mechanists.
- nonarchitecture — a building not designed according to accepted modes of architecture
- noncatastrophic — of the nature of a catastrophe, or disastrous event; calamitous: a catastrophic failure of the dam.
- nonmathematical — of, relating to, or of the nature of mathematics: mathematical truth.
- nonmetaphorical — not metaphorical; literal
- nonphotographic — not involving photographic equipment or techniques
- nonpsychiatrist — a person who is not a psychiatrist
- nonpsychoactive — Not psychoactive.
- north caucasian — a language family including all the Caucasian languages north of the Caucasian divide, as Kabardian and the Circassian language proper, and a few between the divide and the Black Sea, as Abkhazian.
- north vancouver — a city in SW British Columbia, in SW Canada.
- northcountryman — a native or inhabitant of the North of England
- not in the race — given or having no chance
- nutcracker chin — a strong-looking chin
- object exchange — (protocol) (OBEX) A Bluetooth protocol in the Core Protocol Stack for data exchange.
- old clothes man — a person who deals in second-hand clothes
- on the contrary — opposite in nature or character; diametrically or mutually opposed: contrary to fact; contrary propositions.
- on the decrease — decreasing
- on the increase — growing, increasing
- on the track of — If you are on the track of someone or something, you are trying to find them, or find information about them.
- orchestrational — Of or pertaining to orchestration.
- orthodontically — from an orthodontic point of view
- overachievement — to perform, especially academically, above the potential indicated by tests of one's mental ability or aptitude.
- pachymeningitis — inflammation of the dura mater of the brain and spinal cord
- palaeoanthropic — relating to palaeoanthropology
- paleolithic man — any of the prehistoric populations of humans, as the Cro-Magnon, living in the late Pliocene and the Pleistocene epochs.
- panoramic sight — an artillery sight that can be rotated horizontally in a full circle.
- parchment paper — a waterproof and grease-resistant paper produced by treating ordinary paper with concentrated sulfuric acid.
- parenthetically — of, pertaining to, noting, or of the nature of a parenthesis: several unnecessary parenthetic remarks.
- parthenogenetic — development of an egg without fertilization.
- pat on the back — to strike lightly or gently with something flat, as with a paddle or the palm of the hand, usually in order to flatten, smooth, or shape: to pat dough into flat pastry forms.
- penshurst place — a 14th-century mansion near Tunbridge Wells in Kent: birthplace of Sir Philip Sidney; gardens laid out from 1560
- perchloroethane — hexachloroethane.
- phantom circuit — a circuit derived from two suitably arranged pairs of wires, each pair being a circuit (side circuit) and also acting as one half of an additional derived circuit, the entire system providing the capabilities of three circuits while requiring wires for only two.
- phase-switching — a technique used in radio interferometry in which the signal from one of the two antennae is periodically reversed in phase before being multiplied by the signal from the other antenna
- pheasant coucal — a brown and black, red-eyed Australian bird, Centropus phasianinus, with a pheasantlike tail.