19-letter words containing h, m, o
- flannelmouth sucker — a sucker, Catostomus latipinnis, of the Colorado River and its tributaries.
- flavor of the month — Informal. the subject of intense, usually temporary interest; the current fashion.
- fly in the ointment — Also called true fly. any of numerous two-winged insects of the order Diptera, especially of the family Muscidae, as the common housefly.
- four colour theorem — four colour map theorem
- frameshift mutation — a mutation caused by frameshift.
- freedom of the city — nominal citizenship in a city, conferred as an honor upon important visitors.
- freedom of the seas — the doctrine that ships of neutral countries may sail anywhere on the high seas without interference by warring powers.
- from rags to riches — a worthless piece of cloth, especially one that is torn or worn.
- general of the army — the highest ranking military officer; the next rank above general.
- geothermal gradient — the increase in temperature with increasing depth within the earth.
- giant silkworm moth — any silkworm moth of the family Saturniidae.
- go jump in the lake — a body of fresh or salt water of considerable size, surrounded by land.
- go on a/the rampage — If people go on a rampage, they rush around in a wild or violent way, causing damage or destruction.
- go under the hammer — to be offered for sale by an auctioneer
- grandmother's clock — a pendulum clock similar to a grandfather's clock but shorter.
- great idaean mother — Cybele.
- hamiltonian problem — (computability) (Or "Hamilton's problem") A problem in graph theory posed by William Hamilton: given a graph, is there a path through the graph which visits each vertex precisely once (a "Hamiltonian path")? Is there a Hamiltonian path which ends up where it started (a "Hamiltonian cycle" or "Hamiltonian tour")? Hamilton's problem is NP-complete. It has numerous applications, sometimes completely unexpected, in computing.
- handlebar moustache — a man's moustache having long, curved ends that resemble the handlebars of a bicycle.
- harmonic distortion — distortion caused by nonlinear characteristics of electronic apparatus, esp of audio amplifiers, that generate unwanted harmonics of the input frequencies
- hate someone's guts — to hate someone intensely
- hatfield-mccoy feud — a blood feud between two mountain clans on the West Virginia–Kentucky border, the Hatfields of West Virginia and the McCoys of Kentucky, that grew out of their being on opposite sides during the Civil War and was especially violent during 1880–90.
- have a few too many — If you say that someone has had a few too many or has had a few, you mean that they have drunk too many alcoholic drinks.
- have a good mind to — (in a human or other conscious being) the element, part, substance, or process that reasons, thinks, feels, wills, perceives, judges, etc.: the processes of the human mind.
- have a problem with — to be unable to understand or do
- have half a mind to — to have the intention of
- have the makings of — show potential as
- heart in your mouth — If your heart is in your mouth, you feel very excited, worried, or frightened.
- heat of sublimation — the heat absorbed by one gram or unit mass of a substance in the process of changing, at a constant temperature and pressure, from a solid to a gaseous state. Compare sublime (def 10).
- heine-borel theorem — the theorem that in a metric space every covering consisting of open sets that covers a closed and compact set has a finite collection of subsets that covers the given set.
- hepatoportal system — a vascular arrangement in vertebrates through which blood is transported into the liver from capillaries of the stomach, spleen, duodenum, pancreas, and intestines.
- hermitian conjugate — adjoint (def 2).
- holiday entitlement — the number of days of paid holiday in a year that a worker is entitled to take
- homme moyen sensuel — an average man, with average tastes and appetites
- hop, skip, and jump — a short distance
- hop, step, and jump — triple jump.
- horizontal mobility — movement from one position to another within the same social level, as changing jobs without altering occupational status, or moving between social groups having the same social status.
- hotel accommodation — the facilities and the quality of accommodation provided by a hotel
- housing development — a group of houses or apartments, usually of the same size and design, often erected on a tract of land by one builder and controlled by one management.
- human rights record — the facts that are known about the tendency of a country, regime, etc, to observe and protect human rights
- humanist technology — (philosophy) Technology centered around the interests, needs, and well-being of humans.
- hydropneumatization — utilization of air pressure in the housing of a water turbine to keep the level of water that has been used from rising to interfere with the rotor blades.
- hyperbolic geometry — the branch of non-Euclidean geometry that replaces the parallel postulate of Euclidean geometry with the postulate that two distinct lines may be drawn parallel to a given line through a point not on the given line.
- hypercholesteraemia — (medicine) An abnormally high level of cholesterol in the blood.
- hyperparathyroidism — overactivity of the parathyroid gland, characterized by softening of the bones, with consequent pain, tenderness, and a tendency to spontaneous fractures, and by muscular weakness and abdominal cramps.
- hypocholesterolemia — an abnormally low amount of cholesterol in the blood.
- hypocholesterolemic — (pathology) Of, pertaining to, or having hypocholesterolemia.
- hypolipoproteinemia — An abnormally low level of lipoprotein in the blood.
- hypomixolydian mode — a plagal church mode represented on the white keys of a keyboard instrument by an ascending scale from D to D, with the final on G.
- hysterosalpingogram — An X-ray image taken during hysterosalpingography.
- immunocytochemistry — the detection of chemical components of cells by means of antibodies coupled to substances that can be made visible.