15-letter words containing r, h, e, u, m
- humpback bridge — arched bridge
- humphrey bogart — Humphrey (DeForest) ("Bogie"or"Bogey") 1899–57, U.S. motion-picture actor.
- hung parliament — a parliament that does not have a party with a working majority
- hurdle champion — a hurdler who has defeated all others in a competition
- hybrid computer — a computer system containing both analog and digital hardware.
- hydrometallurgy — the technique or process of extracting metals at ordinary temperatures by leaching ore with liquid solvents.
- hyperinsulinism — excessive insulin in the blood, resulting in hypoglycemia.
- hypermutability — liable or subject to change or alteration.
- immunochemistry — the study of the chemistry of immunologic substances and reactions.
- imperial bushel — a unit of dry measure containing 4 pecks, equivalent in the U.S. (and formerly in England) to 2150.42 cubic inches or 35.24 liters (Winchester bushel) and in Great Britain to 2219.36 cubic inches or 36.38 liters (Imperial bushel) Abbreviation: bu., bush.
- in the doldrums — miserable, depressed
- inch of mercury — a unit of atmospheric pressure, being the pressure equal to that exerted by a column of mercury one inch high under standard conditions of temperature and gravity: 33.864 millibars. Abbreviation: in. Hg.
- jerusalem thorn — See under Christ's-thorn.
- largemouth bass — a North American freshwater game fish, Micropterus salmoides, having an upper jaw extending behind the eye and a broad, dark, irregular stripe along each side of the body. Compare smallmouth bass.
- lithium battery — A lithium battery is a type of battery used for low-power, high-reliability, long-life applications, such as clocks, cameras and calculators.
- lithium citrate — a white crystalline solid sometimes used in the treatment of manic-depressive illness and mania. Formula: Li3C6H5O7
- make the rounds — having a flat, circular surface, as a disk.
- man of the hour — a man who is honored by a group.
- manasseh cutler — Manasseh, 1742–1823, U.S. Congregational clergyman and scientist: promoted settlement of Ohio; congressman 1801–05.
- marathon runner — person who runs in a marathon race
- mare erythraeum — (Red Sea) an area in the southern hemisphere of Mars, appearing as a dark region when viewed telescopically from the earth.
- marlborough leg — a tapered leg having a square section.
- masculine rhyme — a rhyme of but a single stressed syllable, as in disdain, complain.
- matta echaurren — Roberto Antonio Sebastián [raw-ver-taw ahn-taw-nyaw se-vahs-tyahn] /rɔˈvɛr tɔ ɑnˈtɔ nyɔ ˌsɛ vɑsˈtyɑn/ (Show IPA), 1911–2002, Chilean painter.
- meadow mushroom — any of various fleshy fungi including the toadstools, puffballs, coral fungi, morels, etc.
- measuring chain — a flexible length of metal links used in calculating distances
- methylene group — the bivalent organic group >CH 2 , derived from methane.
- microearthquake — an earthquake of very low intensity (magnitude of 2 or less on the Richter scale).
- moment of truth — the moment in a bullfight at which the matador is about to make the kill.
- montes riphaeus — a mountain range in the third quadrant of the visible face of the moon.
- most honourable — a courtesy title applied to marquesses and members of the Privy Council and the Order of the Bath
- mother language — a language from which another language is descended; parent language.
- mother superior — the head of a Christian religious community for women.
- mourners' bench — a front row of seats at a revival meeting, for those who are to profess penitence
- mouthwateringly — In a mouthwatering manner.
- muslim brothers — an organization founded in Egypt in 1928 by Hasan al-Banna (1906–49), calling for a return to rigid orthodoxy, the overthrow of secular governments, and a restoration of the theocratic state.
- naismith's rule — a rule of thumb for calculating the time needed for a climbing expedition, allowing 1 hour for every 3 miles of distance plus 1 hour for every 2000 feet of height
- neo-lutheranism — a movement begun in the 19th century in Germany and Scandinavia to revive the orthodox principles, beliefs, and practices of the Lutheran Church.
- neurochemically — In a neurochemical manner or context.
- neuroepithelium — Embryology. the part of the embryonic ectoderm that gives rise to the nervous system.
- number cruncher — a person or thing that performs a great many numerical calculations, as a financial analyst, statistician, computer, or computer program.
- number-cruncher — a person or thing that performs a great many numerical calculations, as a financial analyst, statistician, computer, or computer program.
- nyquist theorem — (communications) A theorem stating that when an analogue waveform is digitised, only the frequencies in the waveform below half the sampling frequency will be recorded. In order to reconstruct (interpolate) a signal from a sequence of samples, sufficient samples must be recorded to capture the peaks and troughs of the original waveform. If a waveform is sampled at less than twice its frequency the reconstructed waveform will effectively contribute only noise. This phenomenon is called "aliasing" (the high frequencies are "under an alias"). This is why the best digital audio is sampled at 44,000 Hz - twice the average upper limit of human hearing. The Nyquist Theorem is not specific to digitised signals (represented by discrete amplitude levels) but applies to any sampled signal (represented by discrete time values), not just sound.
- omnium gatherum — a miscellaneous collection.
- omnium-gatherum — a miscellaneous collection.
- open your mouth — If you say that someone does not open their mouth, you are emphasizing that they never say anything at all.
- over-enthusiasm — absorbing or controlling possession of the mind by any interest or pursuit; lively interest: He shows marked enthusiasm for his studies.
- oyster mushroom — oyster cap.
- petroleum ether — a volatile mixture of the higher alkane hydrocarbons, obtained as a fraction of petroleum and used as a solvent
- photomultiplier — an extremely sensitive detector of light and of other radiation, consisting of a tube in which the electrons released by radiation striking a photocathode are accelerated, greatly amplifying the signal obtainable from small quantities of radiation.