13-letter words containing r, i, d, o
- grylloblattid — a primitive insect of the order Grylloblattidea, having a soft, unpigmented wingless body with long antennae and no eyes, living under stones in moderately high mountains of the western U.S., Japan, and the U.S.S.R.
- gulf of sidra — a wide inlet of the Mediterranean on the N coast of Libya
- haemodialyzer — a piece of equipment used in haemodialysis to screen the blood to remove unwanted substances
- heading sword — a sword used for beheading.
- heaven forbid — You say 'Heaven forbid!' to emphasize that you very much hope that something will not happen.
- heli-boarding — the sport of snowboarding on mountains or glaciers accessible only by helicopter or skiplane
- hemichordates — Plural form of hemichordate.
- hemiterpenoid — (chemistry) a terpenoid having a C5 skeleton.
- herefordshire — a former county in W England, now part of Hereford and Worscester.
- hermaphrodism — the condition of being a hermaphrodite.
- hermaphrodite — an individual in which reproductive organs of both sexes are present. Compare pseudohermaphrodite.
- hero sandwich — a large sandwich, usually consisting of a small loaf of bread or long roll cut in half lengthwise and containing a variety of ingredients, as meat, cheese, lettuce, and tomatoes.
- herod agrippa — (Julius Agrippa) c10 b.c.–a.d. 44, king of Judea 41–44 (grandson of Herod the Great).
- herod antipas — died after a.d. 39, ruler of Galilee, a.d. 4–39: ordered the execution of John the Baptist and participated in the trial of Jesus.
- heroin addict — sb dependent on heroin
- hertfordshire — a county in SE England. 631 sq. mi. (1635 sq. km).
- heterodimeric — (chemistry) produced from two similar but different monomers.
- high-coloured — (of the complexion) deep red or purplish; florid
- histiophoroid — of or relating to the sailfish
- holiday-maker — vacationer.
- holidaymakers — Plural form of holidaymaker.
- home delivery — delivery to one's home
- horned lizard — an insectivorous iguanid lizard of the genus Phrynosoma, of western North America, having hornlike spines on the head and a flattened body covered with spiny scales.
- horse trading — the act or fact of conducting a shrewd exchange or engaging in a horse trade; bargaining.
- horse-trading — to bargain or trade shrewdly.
- horseradishes — Plural form of horseradish.
- house-trained — housebroken.
- housed string — a string of a stair (housed stair) receiving the ends of the risers or treads in a series of housings.
- hudson strait — a strait connecting Hudson Bay and the Atlantic. 450 miles (725 km) long; 100 miles (160 km) wide.
- hunting sword — a short, light saber of the 18th century, having a straight or slightly curved blade.
- 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