16-letter words containing c, h, o, a
- hardrock geology — (loosely) of or relating to igneous or metamorphic rocks, as in mining (hard-rock mining) and geology (hard-rock geology)
- hawthorne effect — a positive change in the performance of a group of persons taking part in an experiment or study due to their perception of being singled out for special consideration.
- hayes-compatible — (communications) A description of a modem which understands the same set of commands as one made by Hayes.
- head post office — the main post office in a town
- health education — education that aims to give people the information they need to live healthily
- health inspector — a public employee who inspects places such as restaurants, shops, factories etc to make sure they are hygienic and do not pose any dangers to health
- health-conscious — having an active interest in one's health
- healthcare proxy — a legal document in which a person can appoint someone to make decisions about medical treatment in the event that he or she is no longer mentally competent or able to communicate.
- heat of reaction — the heat evolved or absorbed when one mole of a product is formed at constant pressure
- heliotherapeutic — Pertaining to heliotherapy.
- hematocrit-value — a centrifuge for separating the cells of the blood from the plasma.
- hematocrystallin — (biology, archaic) hemoglobin.
- hemolytic anemia — an anemic condition characterized by the destruction of red blood cells: seen in some drug reactions and in certain infectious and hereditary disorders.
- hemotherapeutics — hemotherapy.
- hepatopancreases — Plural form of hepatopancreas.
- heralds' college — a royal corporation in England, instituted in 1483, concerned chiefly with armorial bearings, genealogies, honors, and precedence.
- hermaphroditical — Alternative form of hermaphroditic.
- heroin addiction — addiction to the drug heroin
- hexachloroethane — a colorless crystalline compound, C 2 Cl 6 , with a camphorlike odor, soluble in alcohol and ether, insoluble in water: used in organic synthesis and pyrotechnics, as a retarding agent in fermentation, and as a solvent.
- hexanedioic acid — adipic acid.
- hieroglyphically — In hieroglyphics.
- hierophantically — In a hierophantic manner; in the manner of a hierophant.
- high-performance — A high-performance car or other product goes very fast or does a lot.
- higher education — education beyond high school, specifically that provided by colleges and graduate schools, and professional schools.
- hippocratic oath — an oath embodying the duties and obligations of physicians, usually taken by those about to enter upon the practice of medicine.
- hispano-american — Spanish.
- historical novel — a novel within the genre of historical fiction.
- hold one's peace — the normal, nonwarring condition of a nation, group of nations, or the world.
- holographic will — a will that is entirely in the handwriting of the testator: in some states recognized as valid without the attestation of witnesses.
- homeric laughter — loud, hearty laughter, as of the gods.
- homeroom teacher — the teacher attached to the homeroom of a group of students
- horizon distance — Television. the distance of the farthest point on the earth's surface visible from a transmitting antenna.
- horseback riding — activity: riding a horse
- horsetail agaric — the shaggy-mane.
- horticulturalist — Misspelling of horticulturist.
- hospital corners — a fold on a bed sheet or blanket made by tucking the foot or head of the sheet straight under the mattress with the ends protruding and then making a diagonal fold at the side corner of the sheet and tucking this under to produce a triangular corner.
- hospital service — the whole organization of government funded hospitals, their staff, and the services they provide
- hot-cathode tube — thermionic tube.
- huevos rancheros — a Latin American dish of eggs, usually fried or poached, topped with a spicy tomato sauce and sometimes served on a fried corn tortilla with the addition of vegetables and cheese.
- huffman encoding — Huffman coding
- huntington beach — a city in SW California, SE of Los Angeles.
- hurricane season — annual cyclone period
- hydnocarpic acid — an acid, C 16 H 28 O 2 , obtained from chaulmoogra oil, and used in the treatment of leprosy.
- hydrobromic acid — a colorless or faintly yellow corrosive liquid, HBr, an aqueous solution of hydrogen bromide.
- hydrocyanic acid — a colorless, highly poisonous liquid, HCN, an aqueous solution of hydrogen cyanide.
- hydroferricyanic — (chemistry) Pertaining to, or containing, or obtained from, hydrogen, ferric iron, and cyanogen.
- hydrogen cyanide — a colorless poisonous gas, HCN, having a bitter almondlike odor: in aqueous solution it forms hydrocyanic acid.
- hydrophyllaceous — belonging to the Hydrophyllaceae, the waterleaf family of plants.
- hydrostatic head — The hydrostatic head is the vertical height of a column of fluid.
- hyperaccumulator — a plant that absorbs toxins, such as heavy metals, to a greater concentration than that in the soil in which it is growing