21-letter words containing a, n, t, h, r

main-topsail schooner — a two-masted or three-masted schooner having square topsails on the foremast and mainmast: a jackass brig or jackass bark.
majority shareholding — a holding of more than half a company's shares
maryland yellowthroat — (in former systems of nomenclature) the common yellowthroat, Geothlypis trichas, especially the eastern U.S. subspecies.
mechanical instrument — a musical instrument, such as a barrel organ or music box, that plays a preselected piece of music by mechanical means
mechanical metallurgy — the branch of metallurgy dealing with the response of metals to applied forces.
mechanical solidarity — social cohesiveness that is based on shared activities, beliefs, and experiences and is characteristic of simple traditional societies.
mechanical weathering — any of the various weathering processes that cause physical disintegration of exposed rock without any change in the chemical composition of the rock: Collision between rock surfaces can cause mechanical weathering.
mengistu haile mariam — born 1937, Ethiopian political leader: head of state 1977–87; president 1987–91.
miniature photography — photography with a camera using film that is 35 millimeters wide or less.
modern apprenticeship — an arrangement that allows a school leaver to gain vocational qualifications while being trained in a job
monochloroacetic acid — chloroacetic acid.
motherwell and wishaw — a burgh in the Motherwell district, in S Scotland.
motivational research — the application of the knowledge and techniques of the social sciences, especially psychology and sociology, to understanding consumer attitudes and behavior: used as a guide in advertising and marketing.
move heaven and earth — the abode of God, the angels, and the spirits of the righteous after death; the place or state of existence of the blessed after the mortal life.
multichannel analyser — an electronic instrument, such as a pulse height analyser, that splits an input waveform into a large number of channels in accordance with a particular parameter of the input
near-death experience — A near-death experience is a strange experience that some people who have nearly died say they had when they were unconscious.
neither hide nor hair — nothing whatsoever
night storage heating — a system of heating which uses a heater or radiator that stores heat at night-time because electricity is cheaper
nightmare file system — Pejorative hackerism for Sun's Network File System (NFS). In any nontrivial network of Suns where there is a lot of NFS cross-mounting, when one Sun goes down, the others often freeze up. Some machine tries to access the down one, and (getting no response) repeats indefinitely. This causes it to appear dead to some messages (what is actually happening is that it is locked up in what should have been a brief excursion to a higher spl level). Then another machine tries to reach either the down machine or the pseudo-down machine, and itself becomes pseudo-down. The first machine to discover the down one is now trying both to access the down one and to respond to the pseudo-down one, so it is even harder to reach. This situation snowballs very quickly, and soon the entire network of machines is frozen - worst of all, the user can't even abort the file access that started the problem! Many of NFS's problems are excused by partisans as being an inevitable result of its statelessness, which is held to be a great feature (critics, of course, call it a great misfeature). ITS partisans are apt to cite this as proof of Unix's alleged bogosity; ITS had a working NFS-like shared file system with none of these problems in the early 1970s. See also broadcast storm.
no less a person than — a person of no lower importance, rank, etc. than
no/nothing other than — You use nothing other than and no other than when you are going to mention a course of action, decision, or description and emphasize that it is the only one possible in the situation.
north atlantic treaty — the treaty (1949) signed by 12 countries, providing for the establishment of NATO.
north east new guinea — the NE part of the former Australian Territory of New Guinea; now part of Papua New Guinea.
north pacific current — a warm current flowing eastward across the Pacific Ocean.
northumberland strait — the part of the Gulf of St. Lawrence that separates Prince Edward Island from New Brunswick and Nova Scotia, in SE Canada. About 200 miles (320 km) long; 9–30 miles (15–48 km) wide.
not care a hang about — to not care the least bit about
not hold one's breath — If you say that you won't hold your breath, you mean that you do not expect something to happen even though someone has suggested that it might.
nothing in particular — not anything specific
of time and the river — a novel (1935) by Thomas Wolfe.
old spanish practices — irregular practices among a group of workers to gain increased financial allowances, reduced working hours, etc
on o's best behaviour — If someone is on their best behaviour, they are trying very hard to behave well.
one foot in the grave — near to death
one thing and another — You can use the expression 'one thing and another' to suggest that there are several reasons for something or several items on a list, but you are not going to explain or mention them all.
ophthalmia neonatorum — inflammation of the eyes of a newborn child due to an infectious disease, as gonorrhea, contracted during birth from the infected mother.
orthogonal projection — a two-dimensional graphic representation of an object in which the projecting lines are at right angles to the plane of the projection. Also called orthogonal projection. Compare isometric (def 5).
orthogonal trajectory — the locus of a point whose path cuts each curve of a family of curves at right angles.
otorhinolaryngologist — (medicine) Doctor specializing in otorhinolaryngology, the study of ear, nose, and throat.
paper-white narcissus — a white-flowered variety of Narcissus tazetta, often forced for indoor bloom.
part of the furniture — If you describe someone or something as part of the furniture, you are suggesting that they have been somewhere such as their place of work for such a long time that it is hard to imagine that place without them.
pass the hat (around) — In British English, if you pass the hat around, you collect money from a group of people, for example in order to give someone a present. In American English, you just say pass the hat.
path coverage testing — (testing) Testing a program by examining which lines of executable code are visited (as in code coverage testing) and also the ways of getting to each line of code and the subsequent sequence of execution. Path coverage testing is the most comprehensive type of testing that a test suite can provide. It can find more bugs, especially those that are caused by data coupling. However, path coverage is hard and usually only used for small and/or critical sections of code.
pathfinder prospectus — a prospectus regarding the flotation of a new company that contains only sufficient details to test the market reaction
physical anthropology — the branch of anthropology dealing with the evolutionary changes in human anatomy and physiology, using mensurational and descriptive techniques.
pipelined burst cache — Pipeline Burst Cache
polygenic inheritance — the heredity of complex characters that are determined by a large number of genes, each one usually having a relatively small effect.
profit-sharing scheme — a scheme employing profit-sharing; a system in which a portion of the net profit of a business is distributed to its employees, usually in proportion to their wages or their length of service
propantheline bromide — a substance, C 2 3 H 3 0 BrNO 3 , used in the treatment of peptic ulcers.
protestant work ethic — work ethic.
psychomotor agitation — agitation (def 3).
psychomotor-agitation — the act or process of agitating; state of being agitated: She left in great agitation.

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