12-letter words containing o, h, i, a, l
- hallucinosis — a mental state characterized by repeated hallucinations.
- halobacteria — Plural form of halobacterium.
- halogenating — Present participle of halogenate.
- halogenation — (chemistry) The reaction of a halogen with something, especially the replacement of a hydrogen atom of an organic compound with a halogen one.
- halotrichite — a mineral, iron alum, isomorphous with pickeringite, occurring in the form of yellowish fibers.
- halton hills — a city in SE Ontario, in S Canada, near Toronto.
- hamartiology — the doctrine of sin in Christian theology
- hambletonian — one of a superior strain of American trotting horses descended from the stallion Hambletonian.
- hand-holding — the act of holding hands, especially as a sign or token of affection.
- haptoglobins — Plural form of haptoglobin.
- harmonic law — any one of three laws governing planetary motion: each planet revolves in an ellipse, with the sun at one focus; the line connecting a planet to the sun sweeps out equal areas in equal periods of time (law of areas) or the square of the period of revolution of each planet is proportional to the cube of the semimajor axis of the planet's orbit (harmonic law)
- harmonically — pertaining to harmony, as distinguished from melody and rhythm.
- harmoniously — marked by agreement in feeling, attitude, or action: a harmonious group.
- harmonizable — That can be harmonized.
- hazelnut oil — an oil extracted from hazelnuts and used mostly in cooking
- hearing loss — diminished ability to hear
- heilongjiang — a province in NE China, S of the Amur River. 108,880 sq. mi. (281,999 sq. km). Capital: Harbin.
- helicobacter — Any member of the Helicobacter bacteria.
- helicographs — Plural form of helicograph.
- heliogabalus — (Varius Avitus Bassianus"Marcus Aurelius Antoninus") a.d. 204–222, Roman emperor 218–222.
- heliographed — Simple past tense and past participle of heliograph.
- heliographer — (obsolete) Photographer.
- heliographic — a device for signaling by means of a movable mirror that reflects beams of light, especially sunlight, to a distance.
- heliogravure — photoengraving.
- heliotherapy — treatment of disease by means of sunlight.
- hellaciously — In a hellacious manner.
- hematologist — the study of the nature, function, and diseases of the blood and of blood-forming organs.
- hemerocallis — the genus comprising the day lilies.
- hemimetaboly — Hemimetabolism.
- hemiplankton — plankton that spend part of their life cycle in a vegetative state on the sea bottom, riverbed, etc. (opposed to holoplankton).
- hemodialyses — Plural form of hemodialysis.
- hemodialysis — dialysis of the blood, especially with an artificial kidney, for the removal of waste products.
- hemodialyzer — artificial kidney.
- hemophiliacs — Plural form of hemophiliac.
- hemorrhoidal — Usually, hemorrhoids. Pathology. an abnormally enlarged vein mainly due to a persistent increase in venous pressure, occurring inside the anal sphincter of the rectum and beneath the mucous membrane (internal hemorrhoid) or outside the anal sphincter and beneath the surface of the anal skin (external hemorrhoid)
- hepaticology — the scientific study of bryophyte plants known as hepatics or liverworts
- hernioplasty — an operation for the repair of a hernia.
- heroicomical — blending heroic and comic elements: a heroicomic poem.
- heteroplasia — the replacement of normal cells by abnormal cells, as in cancer.
- heterosocial — relating to or denoting mixed-sex social relationships
- hexachloride — a chloride containing six atoms of chlorine.
- hexafluoride — a fluoride containing six atoms of fluorine.
- hexasiloxane — (organic chemistry) Any siloxane having six -Si-O- groups.
- hexobarbital — a barbiturate with hypnotic and sedative properties
- high and low — having a great or considerable extent or reach upward or vertically; lofty; tall: a high wall.
- high voltage — high-power electricity
- high-voltage — operating on or powered by high voltage: a high-voltage generator.
- hill station — a village, post, or the like, especially in S Asia, at a high altitude where government officials and others can be stationed to escape the great heat of tropical summers.
- hispaniolize — to make someone Spanish in their cultural attitudes, values, speech, etc
- hispanophile — an admirer of Hispanic culture or the Spanish language.