12-letter words containing c, h, o, l, a
- geotechnical — of or relating to practical applications of geological science in civil engineering, mining, etc.
- global reach — When people talk about the global reach of a company or industry, they mean its ability to have customers in many different parts of the world.
- grade school — an elementary school that has its pupils grouped or classified into grades.
- haemophiliac — A person with haemophilia.
- hagiological — Relating to hagiology.
- haircoloring — dye or tint for the hair.
- halcyon days — period regarded with nostalgia
- half section — a part that is cut off or separated.
- half-covered — to be or serve as a covering for; extend over; rest on the surface of: Snow covered the fields.
- half-section — a part that is cut off or separated.
- hall process — a process in which aluminum is refined by electrolytic reduction of alumina fused with cryolite.
- hallucinator — One whose judgment and acts are affected by hallucinations; one who errs on account of his hallucinations.
- hallucinogen — a substance that produces hallucinations.
- hallucinosis — a mental state characterized by repeated hallucinations.
- halobacteria — Plural form of halobacterium.
- halotrichite — a mineral, iron alum, isomorphous with pickeringite, occurring in the form of yellowish fibers.
- happy couple — two people in a happy romantic relationship, especially two people who have just married
- 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.
- helicobacter — Any member of the Helicobacter bacteria.
- helicographs — Plural form of helicograph.
- heliographic — a device for signaling by means of a movable mirror that reflects beams of light, especially sunlight, to a distance.
- hellaciously — In a hellacious manner.
- hello packet — (networking, communications) An OSPF packet sent periodically on each network interface, real or virtual, to discover and test connections to neighbours. Hello packets are multicast on physical networks capable of multicasting or broadcasting to enable dynamic router discovery. They include the parameters that routers connected to a common network must agree on. Hello packets increase network resilience by, e.g., allowing a router to establish a secondary connection when a primary connection fails.
- hells canyon — a canyon on the Snake River in S Idaho and along the Oregon border: 125 miles (210 km) long with a maximum depth of about 7900 feet (2408 meters).
- hematocolpos — (medicine) A medical condition in which the vagina fills with menstrual blood, often caused by the combination of menstruation with an imperforate hymen.
- hemerocallis — the genus comprising the day lilies.
- hemophiliacs — Plural form of hemophiliac.
- hendecagonal — (geometry) Having eleven sides an angles; similar to a hendecagon.
- hepaticology — the scientific study of bryophyte plants known as hepatics or liverworts
- heroicomical — blending heroic and comic elements: a heroicomic poem.
- heterocercal — having an unequally divided tail, characteristic of sharks, rays, and skates.
- heterodactyl — having the first and fourth toes directed backward, and the second and third forward, as in trogons.
- heterosocial — relating to or denoting mixed-sex social relationships
- hexacarbonyl — (inorganic chemistry) Any compound having six carbonyl groups.
- hexachloride — a chloride containing six atoms of chlorine.
- hexadecapole — (physics) Anything having sixteen poles or electrodes, or a combination of four quadrupoles.
- histological — the branch of biology dealing with the study of tissues.
- historically — of, pertaining to, treating, or characteristic of history or past events: historical records; historical research.
- histrionical — (British) Alternative form of histrionic.
- holiday camp — In Britain, a holiday camp is a place which provides holiday accommodation and entertainment for large numbers of people.
- holistically — incorporating the concept of holism, or the idea that the whole is more than merely the sum of its parts, in theory or practice: holistic psychology.
- holocephalan — (zoology) Any cartilaginous fish of the subclass Holocephali; the chimeras.
- holophrastic — using or consisting of a single word that functions as a phrase or sentence.
- homolecithal — having a fairly uniform distribution of yolk, as certain eggs or ova having relatively little yolk.
- horn balance — an extension of an aircraft control surface that projects in front of the hinge providing aerodynamic assistance in moving the control
- horometrical — Relating to horometry.
- horrifically — causing horror.
- horse-collar — (especially in baseball) a score of zero.
- housecleaner — Someone employed to clean a house.