13-letter words containing g, i, o, r
- objurgatively — In an objurgative or reproving manner.
- ocean springs — a town in SE Mississippi.
- oceanic ridge — any section of the narrow, largely continuous range of submarine mountains that extends into all the major oceans and at which new oceanic lithosphere is created by the rise of magma from the earth's interior
- oceanographic — the branch of physical geography dealing with the ocean.
- octane-rating — (of gasoline) a designation of antiknock quality, numerically equal to the percentage of isooctane by volume in a mixture of isooctane and normal heptane that matches the given gasoline in antiknock characteristics.
- octogenarians — Plural form of octogenarian.
- oil hardening — to quench (steel) in a bath of oil.
- old bulgarian — the Bulgarian language of the Middle Ages.
- old norwegian — the language of Norway as spoken and written from the middle of the 12th to the end of the 14th centuries.
- olduvai gorge — a gorge in Tanzania in which is located a site containing Australopithecine and human skeletal and cultural remains.
- oleomargarine — margarine.
- oligofluorene — (organic chemistry) Any of a class of aromatic polycyclic hydrocarbons consisting of several fluorene units attached end-to-end.
- open learning — a system of further education on a flexible part-time basis
- open marriage — a marriage in which the partners agree that each is free to have sexual relationships with other partners.
- open registry — ship registration under a national flag available to all ships regardless of nationality.
- opening hours — Opening hours are the times during which a shop, bank, library, or bar is open for business.
- opisthography — the practice of writing on the front and back of a parchment or papyrus
- oppignoration — the act or an instance of pawning or pledging
- orchestrating — Present participle of orchestrate.
- orchidologist — someone who is knowledgeable in orchidology
- ordinary gain — An ordinary gain is a gain in the course of normal business.
- organ grinder — an itinerant street musician who earns a living by playing a hand organ or hurdy-gurdy.
- organ whistle — a steam or air whistle in which the jet is forced up against the thin edge of a pipe closed at the top.
- organ-builder — a maker of organs
- organ-grinder — an itinerant street musician who earns a living by playing a hand organ or hurdy-gurdy.
- organisations — Plural form of organisation.
- organizations — The action of organizing something.
- organoarsenic — (organic chemistry) Describing any organic compound containing a carbon to arsenic bond.
- organogenesis — Biology. the origin and development of an organ.
- organogenetic — Relating to organogenesis.
- organolithium — (organic chemistry) Describing any organic compound containing a carbon to lithium bond.
- organosilicon — pertaining to or noting an organic compound containing silicon, especially where attached directly to a carbon atom.
- organotropism — Physiology. the attraction of microorganisms or chemical substances to particular organs or tissues of the body.
- orgiastically — In an orgiastic fashion.
- orientalizing — Present participle of orientalize.
- originalities — Plural form of originality.
- originatively — in an originative manner
- orismological — relating to orismology
- ornithologist — the branch of zoology that deals with birds.
- orthodiagonal — the axis in a crystal
- orthogonalise — to make (vectors, functions, etc.) orthogonal.
- orthogonality — (mathematics, statistics) the property of being orthogonal.
- orthogonalize — to make (vectors, functions, etc.) orthogonal.
- orthographies — Plural form of orthography.
- orthographize — to spell correctly or according to the rules of orthography.
- oscillographs — Plural form of oscillograph.
- oscillography — a device for recording the wave-forms of changing currents, voltages, or any other quantity that can be translated into electric energy, as sound waves.
- outgeneraling — Present participle of outgeneral.
- outlaw regime — a dangerously unpredictable political regime, as of a country, state, etc, which disregards international law or diplomacy
- outperforming — Present participle of outperform.