13-letter words containing a, r, t, h, o, s
- 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.
- magnetographs — Plural form of magnetograph.
- magnetosphere — the outer region of the earth's ionosphere, where the earth's magnetic field controls the motion of charged particles, as in the Van Allen belts. Compare magnetopause.
- marsh trefoil — buck bean.
- marx brothers — the. a US family of film comedians, esp Arthur Marx, known as Harpo (1888–1964), Herbert Marx, known as Zeppo (1901–79), Julius Marx, known as Groucho (1890–1977), and Leonard Marx, known as Chico (1886–1961). Their films include Animal Crackers (1930), Monkey Business (1931), Horsefeathers (1932), Duck Soup (1933), and A Day at the Races (1937)
- mastigophoran — Also, mastigophore [mas-ti-guh-fawr, -fohr] /ˈmæs tɪ gəˌfɔr, -ˌfoʊr/ (Show IPA). a protozoan of the phylum Mastigophora.
- mastigophoric — Carrying or wielding a whip.
- metachromasia — A characteristic change in the colour of staining carried out in biological tissues, exhibited by certain aniline dyes when they bind to particular substances present in these tissues, called chromotropes.
- metamorphosed — to change the form or nature of; transform.
- metamorphoses — a series of mythological tales or legends in verse (a.d. 7–8) by Ovid.
- metamorphosis — Biology. a profound change in form from one stage to the next in the life history of an organism, as from the caterpillar to the pupa and from the pupa to the adult butterfly. Compare complete metamorphosis.
- microhabitats — Plural form of microhabitat.
- misanthropist — a hater of humankind.
- moderatorship — The position or office of a moderator.
- mohave desert — a desert in S California: part of the Great Basin. About 15,000 sq. mi. (38,850 sq. km).
- monotherapies — Plural form of monotherapy.
- morpho-syntax — the study of the morphological and syntactic properties of linguistic or grammatical units.
- mother abbess — the female head of a religious house of nuns
- mother teresa — Mother (Agnes Gonxha Bojaxhiu) 1910–97, Albanian nun: Nobel Peace Prize 1979 for work in the slums of Calcutta, India.
- musicotherapy — the treatment of mental disorders with music
- musquash root — spotted cowbane.
- mythographies — Plural form of mythography.
- nanochemistry — (chemistry) The synthesis, analysis and characterization of chemical compounds at the nanoscale.
- nephropathies — Plural form of nephropathy.
- non-christian — (of a person, country, etc) not adhering to the Christian faith
- nonhistorical — Not based on or drawn from history.
- nonhysterical — not hysterical or funny
- north augusta — a city in W South Carolina.
- north by east — a point on the compass 11°15′ east of north. Abbreviation: NbE.
- north ossetia — an autonomous republic in S European Russia, in the N Caucasus. 3100 sq. mi. (8029 sq. km) Capital: Vladikavkaz.
- north sea gas — natural gas extracted from deposits beneath the North Sea
- north sea oil — oil extracted from deposits beneath the North Sea
- north-eastern — North-eastern means in or from the north-east of a region or country.
- northeasterly — of or located in the northeast.
- northeastward — the northeast.
- northwestward — the northwest.
- of all others — above all others
- off the rails — into or in a state of dysfunction or disorder
- on the parish — receiving parochial relief
- on the square — a rectangle having all four sides of equal length.
- opisthobranch — any gastropod mollusk of the order Opisthobranchia, as the sea slugs, sea butterflies, and sea hares, characterized by a vestigial or absent mantle and shell and two pairs of tentacles.
- opisthography — the practice of writing on the front and back of a parchment or papyrus
- orchestra pit — musicians' seating in front of stage
- orchestra-pit — a group of performers on various musical instruments, including especially stringed instruments of the viol class, clarinets and flutes, cornets and trombones, drums, and cymbals, for playing music, as symphonies, operas, popular music, or other compositions.
- orchestralist — a person who writes or arranges orchestral music
- orchestrating — Present participle of orchestrate.
- orchestration — (uncountable) the arrangement of music for performance by an orchestra.
- orchestrators — Plural form of orchestrator.
- 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.