12-letter words containing r, a, i, n, o
- germinations — Plural form of germination.
- giant hornet — any large, stinging paper wasp of the family Vespidae, as Vespa crabro (giant hornet) introduced into the U.S. from Europe, or Vespula maculata (bald-faced hornet or white-faced hornet) of North America.
- giant powder — dynamite composed of nitroglycerin and kieselguhr.
- gila monster — a large, venomous lizard, Heloderma suspectum, of the southwestern U.S. and northwestern Mexico, covered with beadlike scales of yellow, orange, and black.
- gladiatorian — (dated) Of or relating to gladiators or to combat in general; gladiatorial.
- glandiferous — bearing nuts or acorns
- glutaredoxin — (enzyme) Any of a family of small redox enzymes that use glutathione as a cofactor.
- gold farming — the practice of selling virtual assets gained in a computer game for real money
- golden ratio — the ratio of two lengths, equal in value to (1 + √5)/2, and given by b/a = (b + a)/b; it is the reciprocal of the golden section and also equal to (1 + golden section)
- gonadotropic — pertaining to substances formed in the anterior pituitary gland that affect the activity of the ovary or testis.
- gonadotropin — a gonadotropic substance.
- gonfaloniers — Plural form of gonfalonier.
- gordian knot — pertaining to Gordius, ancient king of Phrygia, who tied a knot (the Gordian knot) that, according to prophecy, was to be undone only by the person who was to rule Asia, and that was cut, rather than untied, by Alexander the Great.
- gordian worm — nematomorph.
- gormandising — Present participle of gormandise.
- gormandizers — gourmandise1 .
- gormandizing — Present participle of gormandize.
- gourmandizer — One who gourmandizes.
- graciousness — pleasantly kind, benevolent, and courteous.
- gradeflation — grade inflation.
- grain growth — a tendency of certain grains to grow and absorb others when heated under certain conditions.
- graminaceous — Of, pertaining to, or resembling a grass.
- graminivores — Plural form of graminivore.
- gramophonist — a person who uses a gramophone
- gran turismo — (of an automobile) certified as conforming to the specifications, as fuel capacity and engine displacement, for a class of standard automobiles (Gran Turismo) qualified to engage in various types of competitions. Abbreviation: GTO.
- granodiorite — a coarse-grained acid igneous rock containing almost twice as much plagioclase as orthoclase: intermediate in composition between granite and diorite
- granulations — Plural form of granulation.
- granulocytic — Of, or pertaining to, granulocytes.
- graphophonic — a phonograph for recording and reproducing sounds on wax records.
- gratulations — a feeling of joy.
- graving dock — an excavated shore dry dock for the repair and maintenance of ships.
- grayanotoxin — a toxin found in the nectar of some species of rhododendron and other plants of the family Ericaceae and in food made from their nectar, as unpasteurized honey, poisonous to humans and animals.
- grayson kirk — Grayson (Louis) 1903–1997, U.S. educator: president of Columbia University 1953–68.
- groin strain — damage to the groin area caused by overexertion, esp suffered by a sports player
- grooving saw — a circular saw used for making grooves
- gross margin — the difference between total revenue and the cost of goods sold
- grosswardein — German name of Oradea.
- gut reaction — instinctive response
- gyromagnetic — of or relating to the magnetic properties of a rotating charged particle.
- hadrosaurine — Hadrosaurid.
- haemoprotein — Alternative spelling of hemoprotein.
- haemosiderin — Alternative form of hemosiderin.
- haircoloring — dye or tint for the hair.
- hallucinator — One whose judgment and acts are affected by hallucinations; one who errs on account of his hallucinations.
- hand of writ — handwriting; penmanship.
- hard-working — industrious; zealous: a hardworking family man.
- haricot bean — Haricot beans are small white beans that are eaten as a vegetable. They are often sold dried rather than fresh.
- 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