11-letter words containing o, r, a, i
- agritourism — tourism in which customers stay in accommodation on working farms and may have the opportunity to help with farm work
- agrobiology — the science of plant growth and nutrition in relation to agriculture
- agronomical — the science of soil management and the production of field crops.
- agronomists — Plural form of agronomist.
- agrotourism — tourism in which tourists take part in farm or village activities, as animal and crop care, cooking and cleaning, handicrafts, and entertainments.
- ahistorical — not related to history; not historical
- ailurophile — a person who likes cats
- ailurophobe — a person who dislikes or is afraid of cats
- air command — the Canadian air force
- air cushion — an inflatable cushion, usually made of rubber or plastic
- air hostess — An air hostess is a woman whose job is to look after the passengers in an aircraft.
- air officer — a term used to denote the appointment of any officer in the Royal Air Force above the rank of Air Commodore to a position of command
- air station — an airfield, usually smaller than an airport but having facilities for the maintenance of aircraft
- airboarding — a snow sport in which participants slide down slopes headfirst lying flat on an inflatable board
- airdropping — Present participle of airdrop.
- airport bus — a public bus that takes passengers to and from the airport, usually connecting the city centre and (at a large airport) the different terminals
- airport tax — Airport tax is a tax that airline passengers have to pay in order to use an airport.
- alcyonarian — any of various colonial anthozoans of the subclass Alcyonaria with eight tentacles and other body parts in branches or segments of eight
- algorithmic — a set of rules for solving a problem in a finite number of steps, as for finding the greatest common divisor.
- alkali rock — any igneous rock with a marked preponderance of alkali and a low percentage of silica.
- allegorical — An allegorical story, poem, or painting uses allegory.
- allegorized — Simple past tense and past participle of allegorize.
- allegorizer — a person who talks in or explains by means of allegories
- alleviators — Plural form of alleviator.
- alleviatory — having the ability to reduce or moderate the severity of something
- alligatored — Damaged by alligatoring.
- allocentric — Concerned with the interests of others more than one's own; community-minded.
- allocheiria — a medical condition in which sensation is felt at a different point on the body from that stimulated
- allochronic — (biology, of taxa) occurring in different geologic time.
- allographic — Relating to allographs or allography.
- allomorphic — any of two or more different forms of the same chemical compound.
- allopurinol — a synthetic drug that reduces blood concentrations of uric acid and is administered orally in the treatment of gout. Formula: C5H4N4O
- allotropism — a property of certain elements, as carbon, sulfur, and phosphorus, of existing in two or more distinct forms; allomorphism.
- almoravides — a member of a Muslim dynasty ruling in Spain and northern Africa from 1056 to 1147.
- aloha shirt — Hawaiian shirt
- alterations — adjustments
- altercation — An altercation is a noisy argument or disagreement.
- alternation — successive change from one condition or action to another and back again repeatedly
- amatorially — in an amatory manner
- ambiversion — a condition or character trait that includes elements of both introversion and extroversion
- ambrosially — In an ambrosial manner.
- ameliorated — Simple past tense and past participle of ameliorate.
- ameliorates — Third-person singular simple present indicative form of ameliorate.
- ameliorator — A person who, or thing which ameliorates.
- amenorrheic — of or relating to amenorrhea
- amino group — the univalent group, −NH 2 .
- amino resin — any thermosetting synthetic resin formed by copolymerization of amines or amides with aldehydes. Amino resins are used as adhesives and as coatings for paper and textiles
- amino-sugar — a monosaccharide with an amino or substituted amino group in place of a nonglycosidic hydroxyl group.
- aminoborane — (inorganic compound) A mixed hydride of nitrogen and boron, NH2BH2, whose polymer is proposed as a storage site for hydrogen.
- aminopterin — a derivative of pterin used in chemotherapy