11-letter words containing o, r, g, a
- allyl group — the univalent group C 3 H 5 , derived from propylene.
- amalgamator — a person or object that carries out amalgamation
- amino group — the univalent group, −NH 2 .
- amino-sugar — a monosaccharide with an amino or substituted amino group in place of a nonglycosidic hydroxyl group.
- amniography — an x-ray examination of the amniotic sac after the injection of an opaque solution, performed to permit visualization of the umbilical cord and the placenta.
- amphigories — Plural form of amphigory.
- anagnorises — Plural form of anagnorisis.
- anagnorisis — (in Greek tragedy) the recognition or discovery by the protagonist of the identity of some character or the nature of his own predicament, which leads to the resolution of the plot; denouement
- anchor ring — a ring made from an iron bar of circular cross-section
- androgenise — Non-Oxford British standard spelling of androgenize.
- androgenize — Treat with or expose to male hormones, typically resulting in the production of male sexual characteristics.
- androgenous — producing only male offspring
- androgynous — In biology, an androgynous person, animal, or plant has both male and female sexual characteristics.
- anemographs — Plural form of anemograph.
- anemography — the technique of recording wind measurements
- angelolatry — the worship of angels
- angiography — a method of obtaining an X-ray of blood vessels by injecting into them a substance, such as one containing iodine, that shows up as opaque on an X-ray picture
- angkor thom — the site of the ruined capital city of the Khmer empire, at Angkor.
- angle board — a board serving as a gauge for an angle planed across the end of other boards.
- anglo-irish — the English language as spoken in Ireland
- anglosphere — a group of English-speaking countries that share common roots in British culture and history, usually the UK, the US, Australia, New Zealand, and Canada
- angora goat — a breed of domestic goat with long soft hair
- angora wool — Angora (def 2).
- antagonizer — a person who antagonizes people, or provokes hostility: The leader was an antagonizer of the peasantry. Compare antagonist.
- anterograde — moving forwards, in the normal direction of flow
- antiforeign — opposed to or discriminating against foreigners or foreign countries
- aortography — an X-ray examination of the aorta
- apgar score — system for determining the condition of an infant at birth
- approaching — coming closer in time
- approbating — Present participle of approbate.
- approvingly — to speak or think favorably of; pronounce or consider agreeable or good; judge favorably: to approve the policies of the administration.
- apron stage — a stage that projects into the auditorium so that the audience sit on three sides of it
- aquariology — The study of the fauna and flora of aquaria.
- arab legion — a police force (1920–56) under British supervision, responsible for keeping order among desert tribesmen in Trans-Jordan.
- arachnology — the study of arachnids
- archaeology — Archaeology is the study of the societies and peoples of the past by examining the remains of their buildings, tools, and other objects.
- archegonial — relating to an archegonium
- archegonium — a female sex organ, occurring in mosses, spore-bearing vascular plants, and gymnosperms, that produces a single egg cell in its swollen base
- archeologic — (American spelling) alternative spelling of archaeologic.
- archipelago — An archipelago is a group of islands, especially small islands.
- arcticology — the scientific study of the Polar Regions.
- areographic — relating to areography
- arkeologist — Someone who studies the story of Noah's Ark, particularly by searching for physical evidence which would corroborate it.
- armageddons — Plural form of armageddon.
- aromatizing — Present participle of aromatize.
- art college — a college at which students study and make art of various kinds, such as drawing, painting and sculpture
- arteriogram — an X-ray of a vein or artery which has been injected with dye in order to diagnose obstruction or damage
- arthrograms — Plural form of arthrogram.
- aspergation — the action of sprinkling, suffusing or irrigating with water
- assyriology — the study of the culture, history, and archaeological remains of ancient Assyria