13-letter words containing d, r, y, n
- grandfatherly — of or characteristic of a grandfather.
- grandmotherly — of or characteristic of a grandmother.
- ground cherry — Also called husk tomato. any of several plants belonging to the genus Physalis, of the nightshade family, the several species bearing an edible berry enclosed in an enlarged calyx.
- groundhog day — February 2, in most parts of the U.S., the day on which, according to legend, the groundhog first emerges from hibernation. If it is a sunny day and the groundhog sees its shadow, six more weeks of wintry weather are predicted.
- gynandromorph — an individual exhibiting morphological characteristics of both sexes.
- hard currency — money that is backed by gold reserves and is readily convertible into foreign currencies.
- hardenability — The quality or degree of being hardenable.
- herd immunity — the immunity or resistance to a particular infection that occurs in a group of people or animals when a very high percentage of individuals have been vaccinated or previously exposed to the infection.
- honey buzzard — a long-tailed Old World hawk, Pernis apivorus, that feeds on the larvae of bees as well as on small rodents, reptiles, and insects.
- horned scully — a tapered block of concrete with projecting steel rails, placed under water to tear holes in the bottoms of boats.
- hyaluronidase — Biochemistry. a mucolytic enzyme found in the testes, in snake venom, and in hemolytic streptococci and certain other bacteria, that decreases the viscosity of the intercellular matrix by breaking down hyaluronic acid.
- hybridisation — Alternative form of hybridization.
- hybridization — to cause to produce hybrids; cross.
- hydraulicking — a type of mining that uses water to move rock
- hydroairplane — a hydroplane.
- hydroboration — (chemistry) the production or organoboranes by the addition of diborane to unsaturated organic compounds.
- hydrocracking — the cracking of petroleum or the like in the presence of hydrogen.
- hydrodynamics — the branch of fluid dynamics that deals with liquids, including hydrostatics and hydrokinetics.
- hydrofracking — a process in which fractures in rocks below the earth's surface are opened and widened by injecting chemicals and liquids at high pressure: used especially to extract natural gas or oil.
- hydrogen bomb — a bomb, more powerful than an atomic bomb, that derives its explosive energy from the thermonuclear fusion reaction of hydrogen isotopes.
- hydrogen bond — a type of chemical bond in which a hydrogen atom that has a covalent link with one of the electronegative atoms (F, N, O) forms an electrostatic link with another electronegative atom in the same or another molecule.
- hydrogenating — Present participle of hydrogenate.
- hydrogenation — to combine or treat with hydrogen, especially to add hydrogen to the molecule of (an unsaturated organic compound).
- hydrogenizing — Present participle of hydrogenize.
- hydrokinetics — the branch of hydrodynamics that deals with the laws governing liquids or gases in motion.
- hydromorphone — A synthetic narcotic analgesic, (4,5 alpha-epoxy-3-hydroxy-17-methyl morphinan-6-one), similar to morphine and heroin. It is used for moderate to severe pain under the trade name Dilaudid.
- hydronitrogen — a chemical compound containing only hydrogen and nitrogen.
- hydronium ion — the hydrogen ion bonded to a molecule of water, H 3 O + , the form in which hydrogen ions are found in aqueous solution.
- hydroxide ion — the anion OH−.
- hydroxyketone — a ketone containing a hydroxyl group.
- hydroxylamine — an unstable, weakly basic, crystalline compound, NH 3 O, used as a reducing agent, analytical reagent, and chemical intermediate.
- hydroxylation — (organic chemistry) The introduction of a hydroxyl group into a molecule, especially by the replacement of a hydrogen atom.
- hyperadenosis — abnormal enlargement of the glands, especially of the lymph nodes.
- hyperextended — Extremely long; extended greatly.
- hyperinflated — to subject to hyperinflation: hyperinflated prices.
- hypo-chondria — Also, hypochondriasis [hahy-poh-kuh n-drahy-uh-sis] /ˌhaɪ poʊ kənˈdraɪ ə sɪs/ (Show IPA). Psychiatry. an excessive preoccupation with one's health, usually focusing on some particular symptom, as cardiac or gastric problems.
- hypochondriac — Also, hypochondriacal, H05/H0509000 hahy-poh-kuh n-drahy-uh-kuh l, ˌhaɪ poʊ kənˈdraɪ ə kəl. Psychiatry. pertaining to or suffering from hypochondria, an excessive preoccupation with and worry about one's health: The comedy is aimed at the hypochondriac demographic. produced by hypochondria: Hypochondriac feelings overwhelmed her.
- hypochondrium — either of two regions of the abdomen, situated on each side of the epigastrium and above the lumbar regions.
- hypohydration — Dehydration.
- identity card — a card for identifying the bearer, giving name, address, and other personal data.
- idiosyncratic — pertaining to the nature of idiosyncrasy, or something peculiar to an individual: The best minds are idiosyncratic and unpredictable as they follow the course of scientific discovery.
- improvidently — In an improvident manner.
- inadvertently — unintentional: an inadvertent insult.
- incredibility — so extraordinary as to seem impossible: incredible speed.
- incredulously — not credulous; disinclined or indisposed to believe; skeptical.
- indescribably — not describable; too extraordinary for description: a scene of indescribable confusion; indescribable euphoria.
- indeterminacy — the condition or quality of being indeterminate; indetermination.
- indifferently — without interest or concern; not caring; apathetic: his indifferent attitude toward the suffering of others.
- indiscernibly — In a way that cannot be discerned.
- indolebutyric — as in indolebutyric acid, a synthetic plant growth regulator