12-letter words containing a, c, r, o, m
- furocoumarin — psoralen.
- galactometer — a lactometer.
- gastrocnemii — Plural form of gastrocnemius.
- gastronomics — the cooking style typical of a region or country
- geometrician — a person skilled in geometry.
- german ocean — an arm of the Atlantic between Great Britain and the European mainland. About 201,000 sq. mi. (520,600 sq. km); greatest depth, 1998 feet (610 meters).
- gothic armor — white armor of the 15th century, marked especially by much fluting and ornamentation.
- graeco-roman — of or having both Greek and Roman characteristics: the Greco-Roman influence.
- gram calorie — calorie (def 1a). Abbreviation: g-cal.
- graminaceous — Of, pertaining to, or resembling a grass.
- gravicembalo — a harpsichord.
- groom's cake — a fruit cake in layers of graduated size, served at a wedding.
- gymnocarpous — (of a fungus or lichen) having the apothecium open and attached to the surface of the thallus.
- gyromagnetic — of or relating to the magnetic properties of a rotating charged particle.
- haemorrhagic — (chiefly, British) alternative spelling of hemorrhagic.
- harmonic law — any one of three laws governing planetary motion: each planet revolves in an ellipse, with the sun at one focus; the line connecting a planet to the sun sweeps out equal areas in equal periods of time (law of areas) or the square of the period of revolution of each planet is proportional to the cube of the semimajor axis of the planet's orbit (harmonic law)
- harmonically — pertaining to harmony, as distinguished from melody and rhythm.
- 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
- hemerocallis — the genus comprising the day lilies.
- 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.
- heroicomical — blending heroic and comic elements: a heroicomic poem.
- hidrocystoma — An adenoma of the sweat glands.
- hire company — a company that hires things out to people
- home teacher — private tutor
- homoromantic — Romantically attracted to those of the same gender.
- horometrical — Relating to horometry.
- hydrodynamic — pertaining to forces in or motions of liquids.
- hypersarcoma — a growth of proud or fungous flesh
- hypersomniac — a tendency to sleep excessively.
- iatrochemist — a person who practises iatrochemistry
- imidacloprid — The insecticide 1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylideneamine used to control fleas in domestic pets.
- immoralistic — (somewhat, rare) Of or relating to immoralism.
- importancies — Plural form of importancy.
- imprecations — Plural form of imprecation.
- incomparable — beyond comparison; matchless or unequaled: incomparable beauty.
- incomparably — beyond comparison; matchless or unequaled: incomparable beauty.
- infomercials — Plural form of infomercial.
- informercial — infomercial.
- inharmonical — Alternative form of inharmonic.
- intercompany — a number of individuals assembled or associated together; group of people.
- intercompare — (of members of a group) to compare each member against all other members
- intra-atomic — within an atom or atoms.
- intracompany — occurring within a company, especially between employees or branches of the company.
- isochromatic — Optics. having the same color or tint.
- isodiametric — having equal diameters or axes.
- jim crow law — any state law discriminating against black persons.
- kurchatovium — (chemistry) A rejected name for rutherfordium.
- lachrymation — the secretion of tears, especially in abnormal abundance.
- lachrymatory — of, relating to, or causing the shedding of tears.