12-letter words containing i, d, o, c, h, r
- echinodermal — (zoology) Relating or belonging to the echinoderms.
- enchiridions — Plural form of enchiridion.
- flower child — (especially in the 1960s) a young person, especially a hippie, rejecting conventional society and advocating love, peace, and simple, idealistic values.
- forked chain — branched chain.
- foster child — a child raised by someone who is not its natural or adoptive parent.
- harmonichord — a musical instrument resembling an upright piano intended to fuse the sound of a violin with the functionality of a piano, the tone therefore produced using friction rather than through striking
- harpsichords — Plural form of harpsichord.
- helicoptered — Simple past tense and past participle of helicopter.
- hemichordate — belonging or pertaining to the chordates of the phylum Hemichordata, comprising small, widely distributed, marine animals, as the acorn worms.
- heroic drama — Restoration tragedy, especially that popular in England c1660–1700, using highly rhetorical language and written in heroic couplets.
- hexachloride — a chloride containing six atoms of chlorine.
- hidrocystoma — An adenoma of the sweat glands.
- high-colored — deep in color; vivid.
- historicized — Simple past tense and past participle of historicize.
- hydrochloric — of or derived from hydrochloric acid.
- hydrocolloid — a substance that forms a colloid when combined with water.
- hydrocooling — the process or technique of arresting the ripening of fruits and vegetables after harvesting by immersion in ice water.
- hydrodynamic — pertaining to forces in or motions of liquids.
- hydroelastic — undergoing a change in elasticity as a result of the flow of water or another fluid
- hydrofluoric — of or derived from hydrofluoric acid.
- hydrographic — the science of the measurement, description, and mapping of the surface waters of the earth, with special reference to their use for navigation.
- hydrokinetic — pertaining to the motion of liquids.
- hydrological — the science dealing with the occurrence, circulation, distribution, and properties of the waters of the earth and its atmosphere.
- hydromorphic — of or relating to soil having characteristics that are developed when there is excess water all or part of the time.
- hydronautics — (nautical) The science of the design and construction of ships, their engines, and their instrumentation.
- hydronically — in a hydronic manner; in a manner relating to a heating system that uses water
- hydrostatics — the branch of hydrodynamics that deals with the statics of fluids, usually confined to the equilibrium and pressure of liquids.
- hydroxy acid — an organic acid containing both a carboxyl and a hydroxyl group.
- hydrozincite — a hydrous zinc carbonate, Zn 5 (CO 3) 2 (OH) 6 , an important ore of zinc in some localities.
- hypochloride — Misspelling of hypochlorite.
- hypochondria — Also, hypochondriasis [hahy-poh-kuh n-drahy-uh-sis] /ˌhaɪ poʊ kənˈdraɪ ə sɪs/ (Show IPA). Psychiatry. an excessive preoccupation with one's health, usually focusing on some particular symptom, as cardiac or gastric problems.
- hypotrochoid — a geometric curve or pattern formed by following a fixed point on the radial line of a small circle moving around the circumference of a larger circle
- icosahedrons — Plural form of icosahedron.
- idiorhythmic — (of an institution) allowing each member to regulate his or her own life
- indricothere — a long-necked, long-legged, fossil mammal, Indricotherium transouralicum, related to the rhinoceros and existing 10 to 30 million years ago, possibly the largest and heaviest land mammal.
- machairodont — having sabre-like teeth; sabre-toothed
- machine word — word (def 10).
- machine-word — a unit of language, consisting of one or more spoken sounds or their written representation, that functions as a principal carrier of meaning. Words are composed of one or more morphemes and are either the smallest units susceptible of independent use or consist of two or three such units combined under certain linking conditions, as with the loss of primary accent that distinguishes black·bird· from black· bird·. Words are usually separated by spaces in writing, and are distinguished phonologically, as by accent, in many languages.
- marsh orchid — any of various orchids of the genus Dactylorhiza, growing in damp places and having mostly purplish flowers
- microchipped — Simple past tense and past participle of microchip.
- mitochondria — an organelle in the cytoplasm of cells that functions in energy production.
- monochloride — a chloride containing one atom of chlorine with one atom of another element or a group.
- monorchidism — a prenatal or postnatal condition in which one testis is absent or has not descended into the scrotum.
- officeholder — a person filling a governmental position; public official.
- orchidaceous — belonging to the plant family Orchidaceae.
- orchidectomy — orchiectomy.
- orchidomania — an obsession with or passion for orchids
- orthodontics — the branch of dentistry dealing with the prevention and correction of irregular teeth, as by means of braces.
- orthodromics — the act or art of sailing on a great circle
- orthopaedics — (used with a singular verb) the medical specialty concerned with correction of deformities or functional impairments of the skeletal system, especially the extremities and the spine, and associated structures, as muscles and ligaments.