13-letter words containing y, o, h, i
- high holy day — either of two holy days of special significance, Rosh Hashanah or Yom Kippur.
- high-velocity — having an above average velocity
- hippo zarytus — ancient name of Bizerte.
- histiocytosis — (medicine) An excess of histiocytes, associated with various rare diseases.
- histodialysis — histolysis.
- holiday-maker — vacationer.
- holidaymakers — Plural form of holidaymaker.
- holy alliance — a league formed by the principal sovereigns of Europe in 1815 with the professed object of promoting Christian brotherhood but the practical object of repressing democratic revolutions and institutions. The English and Turkish rulers and Pope Pius VII did not join the league.
- home delivery — delivery to one's home
- homiletically — In a homiletic fashion.
- homopolymeric — relating to or made of homopolymers
- homosexuality — sexual desire or behavior directed toward a person or persons of one's own sex.
- honey gilding — gilding of ceramics with a mixture of gold leaf and honey, later fired to fix the gold.
- honor society — (in a college, university, or secondary school) a student society that admits members on the basis of academic merit and, sometimes, worthwhile contributions in extracurricular activities.
- honorifically — In a honorific manner.
- honourability — A state or condition or being honourable.
- horizontality — at right angles to the vertical; parallel to level ground.
- hormic theory — a theory that holds all behavior to be purposive, whether conscious or unconscious.
- horologically — of or relating to horology.
- hospitability — The quality of being hospitable.
- hyalinization — a condition in which normal tissue deteriorates into a homogeneous, translucent material.
- 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.
- hybrid vigour — the increased size, strength, etc, of a hybrid as compared to either of its parents
- hybridisation — Alternative form of hybridization.
- hybridization — to cause to produce hybrids; cross.
- hydrarthrosis — a build-up of fluid or water in the cavity of a joint, esp the knee joint
- hydroaerobics — aerobic exercises performed in water, as in a swimming pool.
- hydroairplane — a hydroplane.
- hydroboration — (chemistry) the production or organoboranes by the addition of diborane to unsaturated organic compounds.
- hydrocephalic — of or relating to hydrocephalus.
- hydrochloride — a salt, especially of an alkaloid, formed by the direct union of hydrochloric acid with an organic base that makes the organic constituent more soluble.
- hydrocolloids — Plural form of hydrocolloid.
- 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.
- hydroelectric — pertaining to the generation and distribution of electricity derived from the energy of falling water or any other hydraulic source.
- 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.
- 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.
- hydromedusoid — a jellyfish or something resembling a jellyfish that lives in water
- 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.
- hydropathical — Alternative form of hydropathic.
- hydroperoxide — any chemical compound having the general formula, ROOH, where R is an element or an organic group.
- hydrostatical — Alternative form of hydrostatic.
- hydrosulfides — Plural form of hydrosulfide.
- hydrosulfuric — (chemistry) Derived from hydrogen sulfide considered as hydrosulfuric acid.
- hydrosulphide — a compound containing the univalent group –HS.
- hydrosulphite — hyposulfite (def 1).