12-letter words containing r, h, e, y
- heterozygote — a hybrid containing genes for two unlike forms of a characteristic, and therefore not breeding true to type.
- heterozygous — having dissimilar pairs of genes for any hereditary characteristic.
- hexacarbonyl — (inorganic chemistry) Any compound having six carbonyl groups.
- hexahydrates — Plural form of hexahydrate.
- hickory pine — bristlecone pine.
- hieratically — In a hieratic way.
- hieroglyphic — Also, hieroglyphical. designating or pertaining to a pictographic script, particularly that of the ancient Egyptians, in which many of the symbols are conventionalized, recognizable pictures of the things represented.
- high polymer — a polymer composed of a large number of monomers.
- highly rated — generally considered to be of high quality
- hire company — a company that hires things out to people
- hoary-headed — having the gray or white hair of advanced age.
- hobby farmer — a person who runs a farm as a hobby rather than a means of making a living
- holidaymaker — vacationer.
- holy picture — a picture of a person or thing that is of religious importance
- home and dry — If you say that someone is, in British English home and dry, or in American English home free, you mean that they have been successful or that they are certain to be successful.
- home country — the country a person comes from
- homeotherapy — therapy for a disease by means of an agent that is similar to but not identical with the causative agent of the disease.
- homoiothermy — having a body temperature that is relatively constant and mostly independent of the temperature of the environment; warm-blooded (opposed to poikilothermic).
- honey badger — ratel.
- honeycreeper — any of several small, usually brightly colored birds, related to the tanagers and wood warblers, of tropical and semitropical America.
- honeymooners — Plural form of honeymooner.
- honor system — a system whereby the students at a school, the inmates in a prison, etc., are put on their honor to observe certain rules in order to minimize administrative supervision or to promote honesty.
- hooray henry — a young upper-class man, often with affectedly hearty voice and manners
- horned poppy — any of several Eurasian papaveraceous plants of the genera Glaucium and Roemeria, having large brightly coloured flowers and long curved seed capsules
- horrendously — shockingly dreadful; horrible: a horrendous crime.
- horseplayers — Plural form of horseplayer.
- how are you? — what is your state of health?
- how dare you — You say 'how dare you' when you are very shocked and angry about something that someone has done.
- humourlessly — Alternative spelling of humorlessly.
- hundred days — the period from March 20 to June 28, 1815, between the arrival of Napoleon in Paris, after his escape from Elba, and his abdication after the battle of Waterloo.
- hydnocarpate — a salt or ester of hydnocarpic acid.
- hydra-headed — containing many problems, difficulties, or obstacles.
- hydrastinine — a white, crystalline, poisonous alkaloid, C 11 H 13 NO 3 , synthesized from hydrastine: used to arrest bleeding, especially in the uterus.
- hydraulicked — (of an extracted mineral) excavated using water
- hydrobromate — (chemistry) hydrobromide.
- hydrobromide — a salt formed by the direct union of hydrobromic acid and an organic base, especially an alkaloid, usually more soluble than the base.
- hydrocephaly — an accumulation of serous fluid within the cranium, especially in infancy, due to obstruction of the movement of cerebrospinal fluid, often causing great enlargement of the head; water on the brain.
- hydrocracker — a high-pressure processing unit used for hydrocracking.
- hydroculture — A type of hydroponics in which plants are grown in a medium that allows the distribution of water and nutrients through capillary action.
- hydrocyclone — A hydrocyclone is a vessel used for separating two liquids with different densities, by the circular movement of fluid.
- hydroecology — The study of support systems in wetlands such as the interactions between water and wildlife habitats.
- hydroelastic — undergoing a change in elasticity as a result of the flow of water or another fluid
- hydrogen ion — ionized hydrogen of the form H + , found in aqueous solutions of all acids.
- hydrogenated — to combine or treat with hydrogen, especially to add hydrogen to the molecule of (an unsaturated organic compound).
- hydrogenates — Third-person singular simple present indicative form of hydrogenate.
- hydrogenized — Simple past tense and past participle of hydrogenize.
- hydrogeology — the science dealing with the occurrence and distribution of underground water.
- hydrographer — the science of the measurement, description, and mapping of the surface waters of the earth, with special reference to their use for navigation.
- hydrokinesis — (science fiction): The psychic ability to manipulate or control water.
- hydrokinetic — pertaining to the motion of liquids.