13-letter words containing h, a, i, r, t, l
- hyperrational — characterized by excessive rationality
- hypersalinity — an excess of salt in a saline solution
- hyperthetical — Misspelling of hypothetical.
- hypervigilant — keenly watchful to detect danger; wary: a vigilant sentry.
- hypsometrical — Of or pertaining to hypsometry.
- iatrochemical — relating to iatrochemistry or iatrochemists
- imperial moth — a yellow moth, Eacles imperialis, having a diagonal band of pinkish brown or purple: the hairy larvae feed on the leaves of hickory, oak, etc.
- initial rhyme — beginning rhyme.
- interchondral — of or relating to cartilage or a cartilage.
- intrathecally — In an intrathecal way; into the spinal canal.
- kilowatt-hour — a unit of energy, equivalent to the energy transferred or expended in one hour by one kilowatt of power; approximately 1.34 horsepower-hours. Abbreviation: kWh, K.W.H., kwhr.
- kindheartedly — In a kindhearted manner.
- kristallnacht — a Nazi pogrom throughout Germany and Austria on the night of November 9–10, 1938, during which Jews were killed and their property destroyed.
- labyrinthical — Labyrinthine; like or relating to a labyrinth.
- labyrinthitis — inflammation of the inner ear, or labyrinth, characterized by dizziness, nausea, and visual disturbances.
- ladder stitch — an embroidery stitch in which crossbars at equal distances are produced between two solid ridges of raised work.
- lateral chain — an open chain of atoms attached to an atom of a larger chain, or to a ring.
- lethargically — of, relating to, or affected with lethargy; drowsy; sluggish; apathetic.
- life-or-death — life-and-death.
- light mineral — any rock-forming mineral that has a specific gravity of less than 2.8 and is generally light in color.
- light railway — a transport system using small trains or trams, often serving parts of a large metropolitan area
- light reading — reading which is not considered too demanding or intellectual
- light therapy — therapeutic exposure to full-spectrum artificial light that simulates sunlight, used to treat various conditions, as seasonal affective disorder.
- light-hearted — carefree; cheerful; merry: a lighthearted laugh.
- literacy hour — (in England and Wales) a daily reading and writing lesson that was introduced into the national primary school curriculum in 1998 to raise standards of literacy
- lithographing — Present participle of lithograph.
- logarithmancy — Divination using logarithms.
- logical truth — the property of being logically tautologous
- lucifer match — friction match.
- macrolecithal — megalecithal.
- marbled white — any butterfly of the satyrid genus Melanargia, with panelled black-and-white wings, but technically a brown butterfly; found in grassland
- marsh trefoil — buck bean.
- martin luther — Martin [mahr-tn;; German mahr-teen] /ˈmɑr tn;; German ˈmɑr tin/ (Show IPA), 1483–1546, German theologian and author: leader, in Germany, of the Protestant Reformation.
- mephobarbital — The drug methylphenobarbital.
- michelin star — a mark of distinction awarded by the Michelin travel guides to a restaurant in recognition of the high quality of its cooking. A restaurant may receive one, two, or three stars, representing very good, exceptional, or exquisite cuisine, respectively
- microlecithal — having a small amount of yolk, as certain eggs or ova.
- mineral pitch — asphalt.
- mitochondrial — (cytology) Of, or relating to mitochondria.
- mother-in-law — the mother of one's husband or wife.
- multibranched — Having more than one branch.
- multithreaded — multithreading
- natural child — Law. an illegitimate child; one born of illicit intercourse. (especially in Louisiana) an illegitimate child who has been lawfully acknowledged by its father.
- natural right — any right that exists by virtue of natural law.
- nearsightedly — In a nearsighted manner; as if nearsighted; myopically.
- netherlandian — the, (used with a singular or plural verb) a kingdom in W Europe, bordering on the North Sea, Germany, and Belgium. 13,433 sq. mi. (34,790 sq. km). Capitals: Amsterdam and The Hague.
- night crawler — an earthworm.
- nightcrawlers — Plural form of nightcrawler.
- nightmarishly — In a nightmarish manner.
- niklaus wirth — (person) The designer of the Modula-2, Modula-3, and, in around 1970, Pascal programming languages.
- nonhistorical — Not based on or drawn from history.