12-letter words containing o, p, h
- graph theory — the branch of mathematics dealing with linear graphs.
- graphologist — the study of handwriting, especially when regarded as an expression of the writer's character, personality, abilities, etc.
- graphophobia — Fear or dislike of writing.
- graphophonic — a phonograph for recording and reproducing sounds on wax records.
- grapple shot — a grapnellike projectile fired from a gun and used as a hold for the end of a line in rescue operations or in kedging.
- grasshoppers — Plural form of grasshopper.
- group theory — the branch of mathematics that deals with the structure of mathematical groups and mappings between them.
- gymnosophist — one of a group of Jainist philosophers, existing from ancient times to c1000, characterized by refusal to wear clothes and the abandonment of caste marks; a member of the Digambara sect.
- haemophiliac — A person with haemophilia.
- haemoprotein — Alternative spelling of hemoprotein.
- hagia sophia — flourished 6th century a.d, Byzantine engineer. He was one of the architects of Hagia Sophia; (originally an Orthodox cathedral and currently a museum in Istanbul, Turkey).
- hagiographer — one of the writers of the Hagiographa.
- hagiographic — Of or pertaining to hagiography.
- haliplankton — plankton living in sea water
- hall process — a process in which aluminum is refined by electrolytic reduction of alumina fused with cryolite.
- halogen lamp — a gas-filled, high-intensity incandescent lamp having a tungsten filament and containing a small amount of a halogen, such as iodine, that vaporizes on heating and redeposits any evaporated tungsten particles back onto the filament: used especially in motion-picture projectors and automobile headlights.
- handypersons — Plural form of handyperson.
- hanging post — a post from which a door, gate, etc., is hung.
- hanover park — a city in NE Illinois.
- happy couple — two people in a happy romantic relationship, especially two people who have just married
- haptoglobins — Plural form of haptoglobin.
- harmonograph — an instrument using a system of pendulums to produce geometric images
- harper woods — a city in SE Michigan, near Detroit.
- harpsichords — Plural form of harpsichord.
- have company — If you have company, you have a visitor or friend with you.
- have pity on — to have sympathy or show mercy for
- heartstopper — something so frightening or emotionally gripping as to make one's heart seem to stop beating: We didn't crash, but it was a heartstopper.
- heckelphones — Plural form of heckelphone.
- hedge hyssop — any plant of the genus Gratiola, a bitter herb used medicinally.
- hedgehopping — Present participle of hedgehop.
- helicographs — Plural form of helicograph.
- helicoptered — Simple past tense and past participle of helicopter.
- 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.
- heliophilous — attracted to sunlight
- heliospheric — Of or pertaining to the heliosphere.
- heliotherapy — treatment of disease by means of sunlight.
- heliotropism — heliotropic tendency or growth.
- hellespontus — an area in the southern hemisphere of Mars.
- 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.
- helmspersons — Plural form of helmsperson.
- help on with — If you help someone on with an item of clothing, you help them put it on.
- hematocolpos — (medicine) A medical condition in which the vagina fills with menstrual blood, often caused by the combination of menstruation with an imperforate hymen.
- hematophobia — Fear of bleeding or the sight of blood.
- hemimorphism — The condition of being hemimorphic.
- hemimorphite — a hydrous zinc silicate mineral, Zn 4 (OH) 2 Si 2 O 7 ⋅H 2 O, occurring in clear, colorless orthorhombic crystals; calamine: an ore of zinc.
- hemiplankton — plankton that spend part of their life cycle in a vegetative state on the sea bottom, riverbed, etc. (opposed to holoplankton).
- hemispheroid — half of a spheroid.
- hemophiliacs — Plural form of hemophiliac.