13-letter words containing a, l, t, h, o, r
- hydrosulphate — a salt formed by the direct union of sulfuric acid with an organic base, especially an alkaloid, and usually more soluble than the base.
- hydroxylation — (organic chemistry) The introduction of a hydroxyl group into a molecule, especially by the replacement of a hydrogen atom.
- hygrometrical — Alternative form of hygrometric.
- hypermorality — conformity to the rules of right conduct; moral or virtuous conduct.
- hyperrational — characterized by excessive rationality
- 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.
- interchondral — of or relating to cartilage or a cartilage.
- 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.
- lead chromate — a yellow crystalline compound, PbCrO 4 , toxic, insoluble in water: used as an industrial paint pigment.
- leather goods — products made of animal skin
- lethal factor — a gene that under certain conditions causes the death of an organism.
- life-or-death — life-and-death.
- 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
- lonely hearts — of or for people seeking counseling or companionship to bring love or romance into their lives: a lonely-hearts column in the newspaper.
- lonely-hearts — of or for people seeking counseling or companionship to bring love or romance into their lives: a lonely-hearts column in the newspaper.
- lycanthropous — Lycanthropic.
- macrolecithal — megalecithal.
- marsh trefoil — buck bean.
- mephobarbital — The drug methylphenobarbital.
- metallography — the study of the structure of metals and alloys by means of microscopy.
- methocarbamol — a substance, C 1 1 H 1 5 NO 5 , used as a muscle relaxant in combination with other drugs in the treatment of acute, painful musculoskeletal conditions.
- methylpropane — (organic compound) isobutane.
- microlecithal — having a small amount of yolk, as certain eggs or ova.
- mitochondrial — (cytology) Of, or relating to mitochondria.
- mother of all — a female parent.
- mother-in-law — the mother of one's husband or wife.
- nonhistorical — Not based on or drawn from history.
- nonhysterical — not hysterical or funny
- nontheatrical — not relating to the theatre
- north babylon — a city on S Long Island, in SE New York.
- north channel — a strait between SW Scotland and NE Ireland. 14 miles (23 km) wide at the narrowest point.
- north holland — a province in W Netherlands. 1163 sq. mi. (3010 sq. km). Capital: Haarlem.
- north sea oil — oil extracted from deposits beneath the North Sea
- northallerton — a market town in N England, administrative centre of North Yorkshire. Pop: 15 517 (2001)
- northeasterly — of or located in the northeast.
- ochlocratical — Pertaining to ochlocracy.
- of all others — above all others
- off the rails — into or in a state of dysfunction or disorder
- on the razzle — out enjoying oneself or celebrating, esp while drinking freely
- openheartedly — Alt form open-heartedly.
- orchestralist — a person who writes or arranges orchestral music
- organ whistle — a steam or air whistle in which the jet is forced up against the thin edge of a pipe closed at the top.
- organolithium — (organic chemistry) Describing any organic compound containing a carbon to lithium bond.
- orthocephalic — having a medium or intermediate relation between the height of the skull and the breadth or length.
- orthodiagonal — the axis in a crystal