16-letter words containing p, r, o
- go-faster stripe — a decorative line, intended to be suggestive of high speed, on the bodywork of a car
- gold-of-pleasure — a yellow-flowered Eurasian plant, Camelina sativa, widespread as a weed, esp in flax fields, and formerly cultivated for its oil-rich seeds: family Brassicaceae (crucifers)
- golden parachute — an employment contract or agreement guaranteeing a key executive of a company substantial severance pay and other financial benefits in the event of job loss caused by the company's being sold or merged.
- good housekeeper — a person who is an efficient and thrifty domestic manager
- grade separation — separation of the levels at which roads, railroads, paths, etc., cross one another in order to prevent conflicting rows of traffic or the possibility of accidents.
- grant of probate — a certificate stating that a will is valid
- granulocytopenia — a diminished number of granulocytes in the blood, which occurs in certain forms of anaemia
- grape phylloxera — See under phylloxera.
- graphics adaptor — (hardware, graphics) (Or "graphics adapter", "graphics card", "video adaptor", etc.) A circuit board fitted to a computer, especially an IBM PC, containing the necessary video memory and other electronics to provide a bitmap display. Adaptors vary in the resolution (number of pixels) and number of colours they can display, and in the refresh rate they support. These parameters are also limited by the monitor to which the adaptor is connected. A number of such display standards, e.g. SVGA, have become common and different software requires or supports different sets.
- gravity platform — (in the oil industry) a drilling platform that rests directly on the sea bed and is kept in position by its own weight; it is usually made of reinforced concrete
- great depression — the economic crisis and period of low business activity in the U.S. and other countries, roughly beginning with the stock-market crash in October, 1929, and continuing through most of the 1930s.
- great soil group — according to a system of classification that originated in Russia, any of several broad groups of soils with common characteristics usually associated with particular climates and vegetation types.
- green woodpecker — a woodpecker, Picus viridis, of Eurasia and northern Africa, having green plumage with a yellow rump and red on the top of the head.
- gregory's powder — a formulation of rhubarb powder used as a laxative or purgative
- group identifier — (operating system) (gid) A unique number, between 0 an 32767, identifying a set of users under Unix. Gids are found in the /etc/passwd and /etc/group databases (or their NIS equivalents) and one is also associated with each file, indicating the group to which its group permissions apply.
- growth potential — capability of expanding
- gum up the works — exertion or effort directed to produce or accomplish something; labor; toil.
- gynandromorphism — an individual exhibiting morphological characteristics of both sexes.
- gynandromorphous — an individual exhibiting morphological characteristics of both sexes.
- hairy woodpecker — a North American woodpecker, Picoides villosus, resembling but larger than the downy woodpecker.
- half life period — Physics. the time required for one half the atoms of a given amount of a radioactive substance to disintegrate.
- hard put (to it) — having considerable difficulty or trouble
- hard-packed snow — snow which becomes very firmly packed as it becomes refrozen due to cold weather conditions rather than melting
- have the drop on — a small quantity of liquid that falls or is produced in a more or less spherical mass; a liquid globule.
- headed notepaper — notepaper headed with the name and address of a person or organization
- health inspector — a public employee who inspects places such as restaurants, shops, factories etc to make sure they are hygienic and do not pose any dangers to health
- healthcare proxy — a legal document in which a person can appoint someone to make decisions about medical treatment in the event that he or she is no longer mentally competent or able to communicate.
- heat prostration — heat exhaustion.
- heliotherapeutic — Pertaining to heliotherapy.
- hemicorporectomy — (surgery) The surgical procedure which cuts through the spine and removes the lower half of the body from the waist down.
- hemopneumothorax — (medicine) pneumothorax and hemothorax occurring together.
- hemotherapeutics — hemotherapy.
- hepatopancreases — Plural form of hepatopancreas.
- hermaphroditical — Alternative form of hermaphroditic.
- herod agrippa ii — died ?93 ad, king of territories in N Palestine (50–?93 ad). He presided (60) at the trial of Saint Paul and sided with the Roman authorities in the Jewish rebellion of 66
- heteropalindrome — Something that spells something else when reversed, a semordnilap.
- hieroglyphically — In hieroglyphics.
- hierophantically — In a hierophantic manner; in the manner of a hierophant.
- high-compression — of a modern type of internal-combustion engine designed so that the fuel mixture is compressed into a smaller cylinder space, resulting in more pressure on the pistons and more power
- high-performance — A high-performance car or other product goes very fast or does a lot.
- high/great hopes — If you have high hopes or great hopes that something will happen, you are confident that it will happen.
- hippocratic oath — an oath embodying the duties and obligations of physicians, usually taken by those about to enter upon the practice of medicine.
- hispano-american — Spanish.
- historiographies — Plural form of historiography.
- hit one's straps — to achieve one's full potential or become fully effective
- holographic will — a will that is entirely in the handwriting of the testator: in some states recognized as valid without the attestation of witnesses.
- honeymoon period — a period of popularity enjoyed by a new government, or a new occupant of a post
- hopfield network — (artificial intelligence) (Or "Hopfield model") A kind of neural network investigated by John Hopfield in the early 1980s. The Hopfield network has no special input or output neurons (see McCulloch-Pitts), but all are both input and output, and all are connected to all others in both directions (with equal weights in the two directions). Input is applied simultaneously to all neurons which then output to each other and the process continues until a stable state is reached, which represents the network output.
- horizontal plane — flat surface parallel to the horizon
- hospital corners — a fold on a bed sheet or blanket made by tucking the foot or head of the sheet straight under the mattress with the ends protruding and then making a diagonal fold at the side corner of the sheet and tucking this under to produce a triangular corner.