15-letter words containing y
- gravity anomaly — a deviation from the normal value of gravity at the earth's surface, caused by density differences at depth, for example those caused by a buried mineral body
- great south bay — an Atlantic Ocean inlet, between the S shore of Long Island and Fire Island and other barrier islands. 45 miles (72 km) long.
- great synagogue — (according to Jewish tradition) a council of 120 members, established by Ezra, that directed the Jews chiefly in religious matters, c450–c200 b.c., and made significant contributions to the Jewish liturgy and Bible.
- great white way — the theater district along Broadway, near Times Square in New York City.
- great-heartedly — in a great-hearted manner
- green with envy — If you say that someone is green with envy, you mean that they are very envious indeed.
- greenback party — a former political party, organized in 1874, opposed to the retirement or reduction of greenbacks and favoring their increase as the only paper currency.
- greenbottle fly — any of several metallic-green blowflies, as Phaenicia sericata.
- grey propaganda — propaganda that does not identify its source
- griffith-joyner — Florence, known as Flojo. 1959–98, US sprinter, winner of two gold medals at the 1988 Olympic Games
- gross indecency — sexual offence
- growth industry — an industry that is experiencing rapid growth
- guidance system — The guidance system of a missile or rocket is the device which controls its course.
- gunnery officer — an officer in charge of heavy guns
- gynandromorphic — (of an organism) Having male and female characteristics.
- gyrostabilizers — Plural form of gyrostabilizer.
- hacking x for y — [ITS] Ritual phrasing of part of the information which ITS made publicly available about each user. This information (the INQUIR record) was a sort of form in which the user could fill out various fields. On display, two of these fields were always combined into a project description of the form "Hacking X for Y" (e.g. ""Hacking perceptrons for Minsky""). This form of description became traditional and has since been carried over to other systems with more general facilities for self-advertisement (such as Unix plan files).
- hair hygrometer — a hygrometer actuated by the changes in length of a strand of human hair brought about by changes in the relative humidity.
- hale and hearty — in good health
- hamersley range — a mountain range in N Western Australia: iron-ore deposits. Highest peak: 1236 m (4056 ft)
- hard mint candy — a hardened mint-flavoured sweet
- hard-luck story — a story of misfortune designed to elicit sympathy
- hardy perennial — a plant that lasts three seasons or more and that can withstand freezing temperatures
- has had its day — If you say that something has had its day, you mean that the period during which it was most successful or popular has now passed.
- haulage company — a firm that transports goods by lorry
- hautes-pyrenees — a department in SW France. 1751 sq. mi. (4535 sq. km). Capital: Tarbes.
- have a derry on — to have a prejudice or grudge against
- have a good day — pleasantry
- have a nice day — pleasantry
- have a way with — manner, mode, or fashion: a new way of looking at a matter; to reply in a polite way.
- have an eye for — the organ of sight, in vertebrates typically one of a pair of spherical bodies contained in an orbit of the skull and in humans appearing externally as a dense, white, curved membrane, or sclera, surrounding a circular, colored portion, or iris, that is covered by a clear, curved membrane, or cornea, and in the center of which is an opening, or pupil, through which light passes to the retina.
- have itchy feet — to be restless; have a desire to travel
- hay conditioner — either of two machines, one designed to crush stems of hay, the other to break and bend them, in order to cause more rapid and even drying
- hazard analysis — risk assessment
- head-up display — an electronic display of data from instruments or other sources projected at eye level so that a driver or pilot sees it without looking away from the road or course. Abbreviation: HUD.
- heartbreakingly — causing intense anguish or sorrow.
- heavenly father — a term used to address or refer to God
- heaviside layer — E layer.
- heavy artillery — guns and howitzers of large caliber.
- heavy breathing — stertorous breathing or breathing done with difficulty
- heavy-heartedly — in a heavy-hearted manner
- hedge your bets — play it safe, lessen a risk
- heliocentricity — measured or considered as being seen from the center of the sun.
- heliometrically — By means of, or in terms of, heliometry.
- hemadynamometer — An instrument by which the pressure of the blood in the arteries, or veins, is measured by the height to which it will raise a column of mercury.
- hematoporphyria — porphyria.
- hematoporphyrin — a porphyrin made by treating haemoglobin with acid, used to treat cancer in photodynamic therapy
- hemicraniectomy — (surgery) The surgical removal of half of the cranium to enable brain surgery; hemicraniotomy.
- hemicryptophyte — any perennial plant that bears its overwintering buds at soil level, where they are often partly covered by surface debris
- hemiglossectomy — (surgery) The surgical removal of a portion of the tongue.