12-letter words containing n, o, r, t
- irreflection — lack of careful or long consideration
- irresolution — lack of resolution; lack of decision or purpose; vacillation.
- irrigational — Of or pertaining to irrigation.
- irritational — Relating to irritation.
- irrotational — not having rotation.
- isosthenuria — the inability of the kidneys to dilute or concentrate urine
- isotretinoin — a yellowish-orange to orange crystalline powder, C 20 H 28 O 2 , used in the treatment of cystic acne.
- jacket crown — a type of artificial, tooth-colored dental crown made of acrylic or porcelain
- jan gossaert — Jan [Flemish yahn] /Flemish yɑn/ (Show IPA), (Jan Gossaert or Gossart) 1478?–1533? Flemish painter.
- jeffersonite — (mineralogy) A variety of pyroxene of olive-green color passing into brown. It contains zinc.
- job creation — the process by which the number of jobs in an area, organization, etc is increased
- job printing — commercial printing of such items as letterheads, circulars, invitations, etc.
- job rotation — the practice of transferring an employee from one work station or activity to another during the working day in order to add variety to a job: often used in assembly line work
- joint author — a person who shares the writing of a book, article, etc, with another
- joint return — a U.S. income-tax return reporting the combined income of a married couple.
- joint runner — (in plumbing) incombustible materials for packing a joint to be caulked with lead.
- joking apart — seriously: said to recall a discussion to seriousness after there has been joking
- joseph brant — Joseph (Thayendanegea) 1742–1807, Mohawk Indian chief who fought on the side of the British in the American Revolution.
- journalistic — of, relating to, or characteristic of journalists or journalism.
- journey time — the time taken to make a journey
- jurisconsult — Roman and Civil Law. a person authorized to give legal advice.
- jurisdiction — the right, power, or authority to administer justice by hearing and determining controversies.
- k/t boundary — Cretaceous/Tertiary boundary: the time zone comprising the end of the Cretaceous and the beginning of the Tertiary periods
- kangaroo rat — any of various small jumping rodents of the family Heteromyidae, of Mexico and the western U.S.
- karyokinetic — Of or pertaining to karyokinesis.
- keratinocyte — An epidermal cell that produces keratin.
- keratogenous — producing horn or a horny substance.
- keratohyalin — (biology) A protein structure found in granules in the stratum granulosum of the epidermis, which may be involved in keratinization, and in Hassall corpuscles in the thymus.
- ketone group — the characteristic group occurring in ketones that consists of the carbonyl group attached to two alkyl groups.
- khornerstone — A multipurpose benchmark from Workstation Labs used in various periodicals. The source is not free. Results are published in "UNIX Review".
- kinetography — a camera for taking pictures for a kinetoscope.
- kiteboarding — A sport in which participants ride a form of wakeboard or surfboard harnessed to a large kite which is controlled by the rider.
- kittikachorn — Thanom [thah-nom] /θɑˈnɒm/ (Show IPA), 1911–2004, Thai army officer and statesman: premier 1963–73.
- kitty-corner — diagonal.
- laboratorian — a building, part of a building, or other place equipped to conduct scientific experiments, tests, investigations, etc., or to manufacture chemicals, medicines, or the like.
- lachrymation — the secretion of tears, especially in abnormal abundance.
- lactoprotein — any protein existing in milk.
- lake ontario — a province in S Canada, bordering on the Great Lakes. 412,582 sq. mi. (1,068,585 sq. km). Capital: Toronto.
- lake torrens — a shallow salt lake in E central South Australia, about 8 m (25 ft) below sea level. Area: 5776 sq km (2230 sq miles)
- laryngectomy — excision of part or all of the larynx.
- last honours — observances of respect at a funeral
- laterization — the weathering process by which rock is changed to laterite.
- lean towards — If you lean towards or lean toward a particular idea, belief, or type of behaviour, you have a tendency to think or act in a particular way.
- leatherbound — Bound in leather.
- lectionaries — Plural form of lectionary.
- lemon butter — a spread made of butter flavored with lemon
- leon trotsky — Leon (Lev or Leib, Davidovich Bronstein) 1879–1940, Russian revolutionary and writer: minister of war 1918–25.
- lepidopteran — lepidopterous.
- lepidopteron — any lepidopterous insect.
- letterboxing — Also, letter box. Chiefly British. a public or private mailbox.