9-letter words containing s, i
- agustin i — Itúrbide, Agustín de.
- ahistoric — not related to or concerned with documented history
- ahtisaari — Martti [mahr-ti] /ˈmɑr tɪ/ (Show IPA), born 1938, president of Finland 1994–2000.
- aids test — a blood test that detects whether the blood sample contains antibodies to the human immunodeficiency virus (HIV) and thus whether a person has or is likely to develop AIDS
- aigrettes — Plural form of aigrette.
- ailanthus — an E Asian simaroubaceous deciduous tree, Ailanthus altissima, planted in Europe and North America, having pinnate leaves, small greenish flowers, and winged fruits
- aimlessly — without aim; purposeless.
- air blast — a jet of air produced mechanically.
- air corps — (before July 26, 1947) a branch of the U.S. Army concerned with military aviation.
- air crash — a crash involving one or more aircraft
- air frost — the deposition of ice condensed from water vapour in the atmosphere on the surface when the air temperature is below 0°C
- air hoist — a pneumatic hoist.
- air miles — Air miles are points that you collect when you buy certain goods or services and which you can use to pay for air travel.
- air scoop — a device fitted to the surface of an aircraft to provide air pressure or ventilation from the airflow
- air scout — a scout belonging to a scout troop that specializes in flying, gliding, etc
- air shaft — a shaft for ventilation, esp in a mine or tunnel
- air space — a space occupied by air.
- air spray — pertaining to compressed-air spraying devices or to liquids used in them.
- air stack — stack (def 13).
- air twist — a serpentine motif within the stem of a goblet, produced by extending and twisting an air bubble during glass blowing.
- air-slake — to slake (lime or the like) with moist air.
- air-spray — pertaining to compressed-air spraying devices or to liquids used in them.
- airbrakes — Plural form of airbrake.
- airbricks — Plural form of airbrick.
- airbursts — Plural form of airburst.
- aircrafts — (nonstandard) Plural form of aircraft.
- airdromes — Plural form of airdrome.
- airfields — Plural form of airfield.
- airframes — Plural form of airframe.
- airliners — Plural form of airliner.
- airplanes — Plural form of airplane.
- airscrews — Plural form of airscrew.
- airstream — a wind, esp at a high altitude
- airstrike — a military attack involving aircraft
- airstrips — Plural form of airstrip.
- airy disc — the bright central part of the diffraction pattern of light from a point source that is diffracted by a circular aperture.
- akathisia — the inability to sit still because of uncontrollable movement caused by reaction to drugs
- akathisic — Relating to, or exhibiting, akathisia.
- akmolinsk — former name of Akmola.
- 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.
- alarmists — Plural form of alarmist.
- albinoism — Congenital lack of melanin pigmentation in the skin, eyes, and hair or feathers (or more rarely only in the eyes); the condition of being albino.
- albricias — an expression of joy
- albucasis — Abu al-Qāsim
- alchemies — a form of chemistry and speculative philosophy practiced in the Middle Ages and the Renaissance and concerned principally with discovering methods for transmuting baser metals into gold and with finding a universal solvent and an elixir of life.
- alchemise — to change by or as by alchemy; transmute: to alchemize lead into gold.
- alchemist — An alchemist was a scientist in the Middle Ages who tried to discover how to change ordinary metals into gold.
- alchymist — Alternative spelling of alchemist.
- alcimedes — the mother of Jason.
- alexiares — a son of Hercules and Hebe.