22-letter words containing d, h, i
- directed acyclic graph — (DAG) A directed graph containing no cycles. This means that if there is a route from node A to node B then there is no way back.
- directional microphone — a microphone that has a greater sensitivity to sounds coming from a particular area in front of it: used to eliminate unwanted sounds.
- dishonorable discharge — the discharge of a person from military service for an offense more serious than one for which a bad-conduct discharge is given.
- disposable soma theory — the theory that ageing is caused by the body having increasingly fewer resources to allocate towards repairing wear and damage to tissues
- dominant seventh chord — a chord consisting of the dominant and the major third, perfect fifth, and minor seventh above it. Its most natural resolution is to a chord on the tonic
- don't mind him/her etc — You use don't mind in expressions such as don't mind him or don't mind them to apologize for someone else's behaviour when you think it might have offended the person you are speaking to.
- double blackwall hitch — a kind of knot
- dread high bit disease — (character) A condition endemic to PRIME (also known as "PR1ME") minicomputers that results in all the characters having their high bit (0x80, see meta bit) ON rather than OFF. This complicates transporting files to other systems and talking to true 8-bit devices. Folklore had it that PRIME adopted the convention in order to save 25 cents per serial line per machine; PRIME old-timers, on the other hand, claim they inherited the disease from Honeywell via customer NASA's compatibility requirements and struggled heroically to cure it. Whoever was responsible, this probably qualifies as one of the most cretinous design tradeoffs ever made. A few other machines have exhibited similar brain damage.
- drive-through delivery — childbirth after which the mother has a very brief hospital stay.
- drumhead court-martial — a court-martial held, usually on a battlefield, for the summary trial of charges of offenses committed during military operations.
- duplex high speed data — (DHSD) A term which describes a full-duplex channel that can carry 64 kilobits per second. This is the kind of service provided by an Inmarsat-B type portable earth station or a leased line (not ISDN).
- earth inductor compass — a compass actuated by induction from the earth's magnetic field.
- educational psychology — a branch of psychology concerned with developing effective educational techniques and dealing with psychological problems in schools.
- educational technology — the use of technology, such as computers, within education, to aid the learning process
- enchanter's nightshade — any of several onagraceous plants of the genus Circaea, esp C. lutetiana, having small white flowers and bristly fruits
- endotrophic mycorrhiza — the most widespread and common type of mycorrhiza, in which the fungus lives within the cells of the roots of the plant
- equal rights amendment — a proposed amendment to the US Constitution enshrining equality between the sexes
- flushed with something — very excited because of some success or triumph
- foot-and-mouth disease — an acute, contagious, febrile disease of cattle, hogs, sheep, and other hoofed animals, caused by any of various rhinoviruses and characterized by vesicular eruptions in the mouth and about the hoofs, teats, and udder.
- forth modification lab — (event) (FORML) A Forth conference held every November on the West coast of the USA ().
- fringed with something — having a specified thing around the edge
- gallamine triethiodide — a neuromuscular blocking drug, C 30 H 60 I 3 N 3 O 3 , similar to curare, used as a skeletal muscle relaxant in conjunction with surgical anesthesia.
- geographic determinism — a doctrine that regards geographical conditions as the determining or molding agency of group life.
- get (or have) wind of — to get (or have) information or a hint concerning; hear (or know) of
- get it into one's head — to come to believe (an idea, esp a whimsical one)
- give the devil his due — Theology. (sometimes initial capital letter) the supreme spirit of evil; Satan. a subordinate evil spirit at enmity with God, and having power to afflict humans both with bodily disease and with spiritual corruption.
- governor winthrop desk — an 18th-century American desk having a slant front.
- graphical display unit — an output device incorporating a cathode ray tube on which both line drawings and text can be displayed. It is usually used in conjunction with a light pen to input or reposition data
- gravitational redshift — (in general relativity) the shift toward longer wavelengths of electromagnetic radiation emitted by a source in a gravitational field, especially at the surface of a massive star.
- green around the gills — the respiratory organ of aquatic animals, as fish, that breathe oxygen dissolved in water.
- hammersmith and fulham — a borough of Greater London on the River Thames: established in 1965 by the amalgamation of Fulham and Hammersmith. Pop: 174 200 (2003 est). Area: 16 sq km (6 sq miles)
- handle with kid gloves — grant special treatment to
- hans christian oersted — Hans Christian [hahns kris-tyahn] /hɑns ˈkrɪs tyɑn/ (Show IPA), 1777–1851, Danish physicist.
- harvard classification — a classification of stars based on the characteristic spectral absorption lines and bands of the chemical elements present
- hawaiian standard time — the time used in the Hawaiian time zone
- heat of solidification — the heat liberated by a unit mass of liquid at its freezing point as it solidifies: equal to the heat of fusion.
- here's mud in your eye — a humorous drinking toast
- high-speed net connect — (hardware, communications) (HNC) A network interface unit for BS2000 mainframes based on Novell NetWare, supporting Ethernet and FDDI.
- hit the ground running — begin enthusiastically
- hold the purse strings — hold the purse strings, to have the power to determine how money shall be spent.
- holy day of obligation — a day on which Roman Catholics are duty-bound to attend Mass and abstain from certain kinds of work.
- hoof-and-mouth disease — foot-and-mouth disease.
- hook, line, and sinker — a curved or angular piece of metal or other hard substance for catching, pulling, holding, or suspending something.
- horn-rimmed spectacles — spectacles with rims made of material resembling horn
- horseradish peroxidase — Histology. an enzyme, isolated from horseradish, that when microinjected can be detected by the colored products of the reaction it catalyzes, used as a tracer, as in tracing the route of a motor neuron from the cell body in the spinal cord to the muscle it innervates.
- hospital administrator — a person who works in the management team of a hospital
- human interface device — (hardware) (HID) Any device to interact directly with humans (mostly input) like keyboard, mouse, joystick, or graphics tablet.
- hybrid multiprocessing — (parallel) (HMP) The kind of multitasking which OS/2 supports. HMP provides some elements of symmetric multiprocessing, using add-on IBM software called MP/2. OS/2 SMP was planned for release in late 1993.
- hydrocinnamic aldehyde — a colorless liquid, C 9 H 10 O, having a floral odor, used in perfumery and flavoring.
- hydrogen embrittlement — the weakening of metal by the sorption of hydrogen during a pickling process, such as that used in plating