9-letter words containing a, r, i
- airstream — a wind, esp at a high altitude
- airstrike — a military attack involving aircraft
- airstrips — Plural form of airstrip.
- airworthy — If an aircraft is airworthy, it is safe to fly.
- airy disc — the bright central part of the diffraction pattern of light from a point source that is diffracted by a circular aperture.
- akarnania — Modern Greek name of Acarnania.
- al farabi — died a.d. 950, Arab philosopher.
- al hijrah — an annual Muslim festival marking the beginning of the Muslim year. It commemorates Mohammed's move from Mecca to Medina and involves the exchange of gifts and the telling of stories about Mohammed
- al-ashari — Abu ʾl-Hasan [ah-boo al-ha-san] /ˈɑ bu æl hæˈsæn/ (Show IPA), a.d. c873–936, the formulator of the classical synthesis in Islamic philosophical theology known as Ashʿarism.
- al-farabi — Mohammed ibn Tarkhan. died 950, Muslim philosopher, physician, and mathematician, of central Asian origin
- alarmists — Plural form of alarmist.
- albert ii — full name Albert Felix Humbert Theodore Christian Eugene Marie. born 1934, king of Belgium (1993–2013); abdicated in favour of his son Philippe
- albertine — a female given name: derived from Albert.
- albertite — a black solid variety of bitumen that has a conchoidal fracture and occurs in veins in oil-bearing strata
- albricias — an expression of joy
- aleatoric — designating or of music that involves chance or unpredictability in composition or performance or both
- aleuronic — related to the aleurone layer
- alexiares — a son of Hercules and Hebe.
- alfilaria — a geraniaceous plant, Erodium cicutarium, native to Europe, with finely divided leaves and small pink or purplish flowers. It is widely naturalized in North America and is used as fodder
- alfileria — Alt form alfilaria.
- algebraic — Algebraic equations, expressions, and principles are based on or use algebra.
- algeciras — a port and resort in SW Spain, on the Strait of Gibraltar: scene of a conference of the Great Powers in 1906. Pop: 108 779 (2003 est)
- algorithm — An algorithm is a series of mathematical steps, especially in a computer program, which will give you the answer to a particular kind of problem or question.
- alienator — A person who alienates.
- aliteracy — the state or quality of being able but disinclined to read
- aliterate — a person who is able to read but disinclined to do so
- alizarine — Alizarin.
- alkalizer — a substance that makes something alkaline or less acidic
- all right — If you say that someone or something is all right, you mean that you find them satisfactory or acceptable.
- all-fired — excessive; extreme
- all-right — safe; sound: Are you all right?
- allegoric — consisting of or pertaining to allegory; of the nature of or containing allgegory; figurative: an allegorical poem; an allegorical meaning.
- allergies — Plural form of allergy.
- allergist — An allergist is a doctor who specializes in treating people with allergies.
- allethrin — a clear viscous amber-coloured liquid used as an insecticide and synergist. Formula: C19H26O3; relative density: 1.005
- alligator — An alligator is a large reptile with short legs, a long tail and very powerful jaws.
- allobaric — of or relating to change in atmospheric pressure: allobaric wind.
- almoravid — a member of a Muslim dynasty ruling in Spain and northern Africa from 1056 to 1147.
- almsgiver — a person who gives alms
- alt-right — (in the US) a political movement whose supporters hold extreme right-wing views and reject mainstream politics
- altarwise — in the position of an altar
- altigraph — an instrument that measures altitude and records the measurements graphically
- altimeter — An altimeter is an instrument in an aircraft that shows the height of the aircraft above the ground.
- altimetre — (nonstandard, and, now, largely obsolete) Alternative form of altimeter.
- altimetry — the science of measuring altitudes, as with an altimeter
- altricial — (of the young of some species of birds after hatching) naked, blind, and dependent on the parents for food
- altruists — Plural form of altruist.
- amarantin — a protein contained within the amaranth seed
- amaritude — Bitterness.
- amaryllid — a plant of the amaryllis family