9-letter words containing a, s, o, i
- ahistoric — not related to or concerned with documented history
- air corps — (before July 26, 1947) a branch of the U.S. Army concerned with military aviation.
- 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 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
- airdromes — Plural form of airdrome.
- akmolinsk — former name of Akmola.
- 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.
- alfonso i — (Alfonso Henriques) 1109?–85, first king of Portugal 1139–85.
- alkaloids — Plural form of alkaloid.
- alkalosis — an abnormal increase in the alkalinity of the blood and extracellular fluids
- alkoxides — Plural form of alkoxide.
- allantois — a membranous sac growing out of the ventral surface of the hind gut of embryonic reptiles, birds, and mammals. It combines with the chorion to form the mammalian placenta
- allusions — Plural form of allusion.
- alongside — If one thing is alongside another thing, the first thing is next to the second.
- altissimo — (of music) very high in pitch
- aluminous — resembling aluminium
- amatoxins — Plural form of amatoxin.
- amaurosis — blindness, esp when occurring without observable damage to the eye
- ambagious — ambiguous
- ambiguous — If you describe something as ambiguous, you mean that it is unclear or confusing because it can be understood in more than one way.
- ambitions — an earnest desire for some type of achievement or distinction, as power, honor, fame, or wealth, and the willingness to strive for its attainment: Too much ambition caused him to be disliked by his colleagues.
- ambitious — Someone who is ambitious has a strong desire to be successful, rich, or powerful.
- ambrosiac — Having the qualities of ambrosia; delicious.
- ambrosial — of or fit for the gods; divine
- ambrosian — exceptionally pleasing to taste or smell; especially delicious or fragrant.
- ammonites — a nomadic tribe living east of the Jordan: a persistent enemy of the Israelites
- ammonoids — Plural form of ammonoid.
- amoralism — the doctrine or attitude that ignores or rejects moral vaues, or deems them to be irrelevant
- amoralist — a person who adheres to the doctrine of amoralism
- amoristic — relating to, or characteristic of, romantic love
- amornings — of a morning
- amorosity — a loving feeling
- amorphism — the state or quality of being amorphous.
- amortised — Finance. to liquidate or extinguish (a mortgage, debt, or other obligation), especially by periodic payments to the creditor or to a sinking fund. to write off a cost of (an asset) gradually.
- amortizes — Third-person singular simple present indicative form of amortize.
- amphioxus — cephalochordate
- amphipods — Plural form of amphipod.
- amplicons — Plural form of amplicon.
- amylopsin — an enzyme of the pancreatic juice that converts starch into sugar; pancreatic amylase
- anabiosis — the ability to return to life after apparent death; suspended animation
- anabolism — a metabolic process in which complex molecules are synthesized from simpler ones with the storage of energy; constructive metabolism
- anacostia — a section of the District of Columbia, in the SE part.
- analogies — A comparison between two things, typically on the basis of their structure and for the purpose of explanation or clarification.
- analogise — to make use of analogy in reasoning, argument, etc.
- analogism — an argument or reason based on analogy
- analogist — a person who employs or argues from analogy.
- anatomies — Plural form of anatomy.
- anatomise — to cut apart (an animal or plant) to show or examine the position, structure, and relation of the parts; display the anatomy of; dissect.