19-letter words containing c, h, y, t

political geography — the branch of human geography that deals with the relationship between political processes and spatial structures (regions, territories, etc)
polyethylene glycol — any of a series of polymers of ethylene glycol, having a molecular weight of from about 200 to 6000, obtained by condensation of ethylene glycol or of ethylene oxide and water, used as an emulsifying agent and lubricant in ointments, creams, etc.
polyphonic ringtone — (in mobile phones) a ringtone in which more than one musical note is played at the same time
polytene chromosome — a giant, cross-banded chromosome that results from multiple replication of its genetic material with the duplicated chromatin strands remaining closely associated.
postsynchronization — the process of adding sound, such as dubbing, to a film or video after shooting or videotaping is completed
priority scheduling — (operating system) Processes scheduling in which the scheduler selects tasks to run based on their priority as opposed to, say, a simple round-robin. Priorities may be static or dynamic. Static priorities are assigned at the time of creation, while dynamic priorities are based on the processes' behaviour while in the system. For example, the scheduler may favour I/O-intensive tasks so that expensive requests can be issued as early as possible. A danger of priority scheduling is starvation, in which processes with lower priorities are not given the opportunity to run. In order to avoid starvation, in preemptive scheduling, the priority of a process is gradually reduced while it is running. Eventually, the priority of the running process will no longer be the highest, and the next process will start running. This method is called aging.
psychic determinism — the theory that all aspects of a person's psychological makeup arise from specific causes or forces, as previous experiences or instinctual drives, which may be conscious or unconscious.
psychotechnological — of or relating to psychotechnology
psychrometric chart — a chart for calculating values of relative humidity, absolute humidity, and dew point from psychrometer readings.
radiochromatography — chromatography in which radiolabeled substances on the chromatogram are determined quantitatively or qualitatively by measuring their radioactivity.
rayleigh scattering — the scattering of light by particles that are very small in relation to the wavelength of the light, and in which the intensity of the scattered light varies inversely with the fourth power of the wavelength.
research laboratory — place for scientific experimentation
rhythmic gymnastics — a form of gymnastics involving movements using hand apparatus such as balls, hoops, and ribbons
semidetached binary — a pair of stars that are so close together that mass transfer occurs from one to the other
short-stay car park — a car park where a car can be left for a relatively short time
simple carbohydrate — a carbohydrate, as glucose, that consists of a single monosaccharide unit.
social anthropology — study of human culture
sodium hypochlorite — a pale-green, crystalline compound, NaOCl, unstable in air, soluble in cold water, decomposes in hot water: used as a bleaching agent for paper and textiles, in water purification, in household use, and as a fungicide.
solid-state physics — the branch of physics that deals with the macroscopic physical properties of matter, especially solids; the study of the electromagnetic, structural, and thermodynamic properties of solids.
spherical astronomy — the branch of astronomy dealing with the determination of the positions of celestial bodies on the celestial sphere.
st. anthony's cross — a T -shaped cross.
sympathetic contact — behavior toward an individual based on the individual's personal makeup rather than on his or her group membership.
symptomatic anthrax — blackleg.
synthetic detergent — any synthetic substance, other than soap, that is an effective cleanser and functions equally well as a surface-active agent in hard or soft water.
telephone directory — a book, directory, or the like, usually containing an alphabetical list of telephone subscribers in a city or other area, together with their addresses and telephone numbers.
tetrachloroethylene — a colorless, nonflammable, nonexplosive liquid, C 2 Cl 4 , used as a solvent, especially in dry cleaning.
the channel country — an area of E central Australia, in SW Queensland: crossed by intermittent rivers and subject to both flooding and long periods of drought
the eroica symphony — Symphony No. 3 in E flat major by Ludwig van Beethoven
the world of cryton — (TWOC) A BBS for the Acorn Archimedes. Telephone: +44 (1749) 670 030 (24hrs, most speeds).
theoretical physics — abstract use of physics
to bury the hatchet — If two people bury the hatchet, they become friendly again after a quarrel or disagreement.
to change your mind — If you change your mind, or if someone or something changes your mind, you change a decision you have made or an opinion that you had.
to change your tune — If you say that someone has changed their tune, you are criticizing them because they have changed their opinion or way of doing things.
to click your heels — If someone such as a soldier clicks their heels, they make a sound by knocking the heels of their shoes together when saluting or greeting someone.
trickle-down theory — an economic theory that monetary benefits directed especially by the government to big business will in turn pass down to and profit smaller businesses and the general public.
trumpet honeysuckle — an American honeysuckle, Lonicera sempervirens, having spikes of large, tubular flowers, deep-red outside and yellow within.
turn of the century — point when one century becomes another
typographical error — an error in printed or typewritten matter resulting from striking the improper key of a keyboard, from mechanical failure, or the like.
ultrahigh frequency — any frequency between 300 and 3000 megahertz. Abbreviation: UHF, uhf.
ultramicrochemistry — the branch of microchemistry dealing with minute quantities of material weighing one microgram or less.
velocity microphone — a microphone in which the output varies according to the instantaneous velocity of the air molecules in the incident sound waves.
waste heat recovery — the use of heat that is produced in a thermodynamic cycle, as in a furnace, combustion engine, etc, in another process, such as heating feedwater or air
wearable technology — a small computer or advanced electronic device that is worn or carried on the body: the trendiest wearable technologies.
what-do-you-call-it — whachamacallit.
with flying colours — If you pass a test with flying colours, you have done very well in the test.

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