13-letter words containing h, e, y, n
- 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.
- hydroairplane — a hydroplane.
- 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.
- 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.
- hymenopterans — Plural form of hymenopteran.
- hymenopterous — belonging or pertaining to the Hymenoptera, an order of insects having, when winged, four membranous wings, and comprising the wasps, bees, ants, ichneumon flies, and sawflies.
- hymenorrhaphy — (medicine) Reconstructive surgery in which a woman's hymen is restored to the unbroken condition ordinarily characteristic of virginity.
- hyperadenosis — abnormal enlargement of the glands, especially of the lymph nodes.
- hyperbolising — to use hyperbole; exaggerate.
- hypercinnabar — (mineral) A form of cinnabar that forms hexagonal crystals.
- hypercyanotic — blueness or lividness of the skin, as from imperfectly oxygenated blood.
- hyperextended — Extremely long; extended greatly.
- hyperfunction — abnormally increased function, especially of glands or other organs.
- hyperimmunity — the state of being immune from or insusceptible to a particular disease or the like.
- hyperimmunize — to render highly immunized
- hyperinflated — to subject to hyperinflation: hyperinflated prices.
- hypermagnetic — (physics) Extremely magnetic.
- hypermutation — (uncountable) Frequent mutation.
- hypernatremia — an abnormally high concentration of sodium in the blood.
- hypernephroma — Renal cell carcinoma.
- hyperpersonal — Very highly personal.
- hyperphrygian — (in ancient Greek music) of a principle mode found between the hyperlydian and the hypolydian
- hyperrational — characterized by excessive rationality
- hyperromantic — extremely or excessively romantic
- hypersalinity — an excess of salt in a saline solution
- hypersplenism — an abnormal condition characterized by an enlarged spleen that prematurely destroys red blood cells or platelets.
- hypersthenite — a person who possesses an excess of muscle strength
- hypertensives — Plural form of hypertensive.
- hypertonicity — Physiology. of or relating to hypertonia.
- hyperurbanism — a pronunciation or grammatical form or usage produced by a speaker of one dialect according to an analogical rule formed by comparison of the speaker's own usage with that of another, more prestigious, dialect and often applied in an inappropriate context, especially in an effort to avoid sounding countrified, rural, or provincial, as in the pronunciation of the word two (to̅o̅) as (tyo̅o̅).
- hypervigilant — keenly watchful to detect danger; wary: a vigilant sentry.
- hypervirulent — actively poisonous; intensely noxious: a virulent insect bite.
- hyphenization — the act or use of hyphenation
- hyponatraemia — a condition in which there is a low concentration of sodium in the blood
- hypoperfusion — (medicine) Decreased perfusion of blood through an organ.
- hyposecretion — a diminished secretion.
- hyposensitive — low or diminished sensitivity to stimulation.
- hyposensitize — to cause (a person) to become less sensitive to (a substance producing an allergic reaction); desensitize.
- hypothecating — Present participle of hypothecate.
- hypothecation — to pledge to a creditor as security without delivering over; mortgage.
- hypothesising — Present participle of hypothesise.