11-letter words containing o, h, a, r
- antiheroine — a central female character in a novel, play, film, etc, who lacks the traditional heroic virtues
- antiheroism — (literature) The quality of being an antihero.
- antihyperon — the antiparticle of the hyperon
- antiphonary — a bound collection of antiphons, esp for use in the divine office
- antistrophe — the second of two movements made by a chorus during the performance of a choral ode
- antithyroid — acting against excessive thyroid activity
- antler moth — a European noctuid moth, Cerapteryx (or Charaeas) graminis, that has white antler-like markings on the forewings and produces larvae that periodically cause great damage to pastures and grasslands
- aortic arch — one member of a series of paired curved blood vessels that arise in the embryo from the ventral aorta, pass around the pharynx through the branchial arches, and join with the dorsal aorta to form the great vessels of the head and neck.
- aortography — an X-ray examination of the aorta
- aphrodisiac — An aphrodisiac is a food, drink, or drug which is said to make people want to have sex.
- apomorphine — a white crystalline alkaloid, derived from morphine, that is used medicinally as an emetic, as an expectorant, and in Parkinson's disease. Formula: C17H17NO2
- apostrophes — Plural form of apostrophe.
- apostrophic — a digression in the form of an address to someone not present, or to a personified object or idea, as “O Death, where is thy sting?”.
- apostrophus — a symbol resembling a reversed letter C used in Roman numerals to denote large numbers
- approacheth — Archaic third-person singular form of approach.
- approaching — coming closer in time
- apra harbor — a port on the W coast of Guam.
- arachidonic — related to arachidonic acid or the derivatives of arachidonic acid
- arachis oil — peanut oil.
- arachnoidal — relating to the arachnoid
- arachnology — the study of arachnids
- araneomorph — (zoology) Any of the Araneomorphae, a suborder of spiders whose fangs cross with a pinching action.
- archaeocyte — (in sponges) a type of amoebocyte capable of developing into other types of cells, especially reproductive cells.
- archaeology — Archaeology is the study of the societies and peoples of the past by examining the remains of their buildings, tools, and other objects.
- archaeornis — an extinct primitive Jurassic bird, formerly placed in the genus Archaeornis but now thought to be a species of archaeopteryx
- archaeozoic — Archeozoic
- archbishops — Plural form of archbishop.
- archdeacons — Plural form of archdeacon.
- archdiocese — An archdiocese is the area over which an archbishop has control.
- archdukedom — the territory ruled by an archduke or archduchess
- 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
- archenteron — the cavity within an embryo at the gastrula stage of development that eventually becomes the digestive cavity
- archeologic — (American spelling) alternative spelling of archaeologic.
- archeometry — the branch of archaeology that deals with the dating of archaeological specimens through specific techniques, as radiocarbon dating and amino-acid dating.
- archicortex — (anatomy) Part of the allocortex, specifically three layered hippocampal cortexes necessary for hippocampus formation.
- archilochus — 7th century bc, Greek poet of Paros, notable for using his own experience as subject matter
- archipelago — An archipelago is a group of islands, especially small islands.
- architector — (obsolete) An architect.
- archtraitor — A chief or transcendent traitor.
- arctophilia — the practice of collecting teddy bears
- areographic — relating to areography
- armory show — an international art show held in a New York City armory in 1913: considered a landmark in the public and critical acceptance of modern art.
- aroint thee — away! begone!
- aron kodesh — Holy Ark.
- arrhenotoky — a form of parthenogenesis which produces only male offspring
- arrowheaded — Shaped like the head of an arrow; cuneiform; cuneatic.
- arsonphobia — Pyrophobia.
- art history — study of art through the ages
- arthrectomy — surgical excision of a joint