13-letter words containing a, m, u, r
- house manager — a business manager responsible for managing a theater and its staff.
- house-warming — a party to celebrate a person's or family's move to a new home.
- housewarmings — Plural form of housewarming.
- humanitarians — Plural form of humanitarian.
- hydraulic ram — a device by which the energy of descending water is utilized to raise a part of the water to a height greater than that of the source.
- hypermutation — (uncountable) Frequent mutation.
- hyperurbanism — a pronunciation or grammatical form or usage produced by a speaker of one dialect according to an analogical rule formed by comparison of the speaker's own usage with that of another, more prestigious, dialect and often applied in an inappropriate context, especially in an effort to avoid sounding countrified, rural, or provincial, as in the pronunciation of the word two (to̅o̅) as (tyo̅o̅).
- hyperuricemia — an excess of uric acid in the blood, often producing gout.
- hyracotherium — eohippus.
- ideal mixture — An ideal mixture is a mixture in which the concentration of any part taken from it is the same as the average for the whole.
- immunotherapy — treatment designed to produce immunity to a disease or enhance the resistance of the immune system to an active disease process, as cancer.
- imperturbable — incapable of being upset or agitated; not easily excited; calm: imperturbable composure.
- imperturbably — incapable of being upset or agitated; not easily excited; calm: imperturbable composure.
- importunately — urgent or persistent in solicitation, sometimes annoyingly so.
- inclinatorium — an instrument invented by Robert Norman in 1576, used to determine the degree to which a magnetic needle dips towards the earth; a dipping needle
- incouragement — Archaic form of encouragement.
- indian summer — a period of mild, dry weather, usually accompanied by a hazy atmosphere, occurring usually in late October or early November and following a period of colder weather.
- industrialism — an economic organization of society built largely on mechanized industry rather than agriculture, craftsmanship, or commerce.
- inner sanctum — sanctum (def 2).
- instrumentals — Plural form of instrumental.
- integumentary — of, relating to, or like an integument.
- intercommunal — used or shared in common by everyone in a group: a communal jug of wine.
- intermountain — located between mountains or mountain ranges: an intermontane lake.
- intermuscular — of or relating to muscle or the muscles: muscular strain.
- intramuscular — located or occurring within a muscle.
- isoamyl group — the univalent group C 5 H 11 .
- jacquard loom — a loom for producing elaborate designs in an intricate weave (Jacquard weave) constructed from a variety of basic weaves.
- jerry sussman — Gerald Sussman
- jerusalem oak — feather geranium.
- jumper cables — jump leads for starting a vehicle
- justin martyr — Saint, a.d. c100–163? early church historian and philosopher.
- kemal ataturk — (Mustafa or Mustapha Kemal"Kemal Pasha") 1881–1938, Turkish general: president of Turkey 1923–38.
- kwame nkrumah — Kwame [kwah-mee] /ˈkwɑ mi/ (Show IPA), 1909–72, president of Ghana 1960–66.
- labour market — When you talk about the labour market, you are referring to all the people who are able to work and want jobs in a country or area, in relation to the number of jobs there are available in that country or area.
- lacrimal duct — either of two small ducts extending from the inner corner of each eyelid to the lacrimal sac.
- lake-urumiyeh — Lake. Urmia, Lake.
- lambeosaurine — Any crested hadrosaurid dinosaur of the subfamily Lambeosaurinae.
- laundry-woman — laundress.
- laurel family — the plant family Lauraceae, characterized by evergreen or deciduous trees having simple, leathery leaves, aromatic bark and foliage, clusters of small green or yellow flowers, and fruit in the form of a berry or drupe, and including the avocado, bay, laurels of the genera Laurus and Umbellularia, sassafras, spicebush (Lindera benzoin), and the trees that yield camphor and cinnamon.
- liebfraumilch — a white wine produced chiefly in the region of Hesse in Germany.
- low churchman — a person who advocates or follows Low Church practices.
- lucid dreamer — a person who has lucid dreams, either naturally or as a result of training
- lucifer match — friction match.
- lucretia mott — John Raleigh, 1865–1955, U.S. religious leader: Nobel Peace Prize 1946.
- lumbar plexus — a network of nerves originating in the spinal nerves of the midback region and innervating the pelvic area, the front of the legs, and part of the feet.
- lumber jacket — a short, straight, wool plaid jacket or coat, for informal wear, usually belted and having patch pockets.
- lumberjackets — Plural form of lumberjacket.
- lump of sugar — lump1 (def 4).
- luxembourgian — of or relating to Luxembourg, its people, or their language.
- mackerel gull — tern1 .