9-letter words containing a, s, o
- acrolects — Plural form of acrolect.
- acroliths — Plural form of acrolith.
- acropolis — the citadel of an ancient Greek city
- acrosomal — relating to the acrosome
- acrosomes — Plural form of acrosome.
- acrospire — the first shoot developing from the plumule of a germinating grain seed
- acrospore — a spore borne at the tip of a sporophore, as a basidiospore.
- acrostics — Plural form of acrostic.
- actioners — Plural form of actioner.
- actionist — a person who is bent on (spoken) action
- actuators — Plural form of actuator.
- acuminous — keen insight; shrewdness: remarkable acumen in business matters.
- acupoints — Plural form of acupoint.
- acusector — a needle for cutting tissue by means of a high-frequency electric current.
- adaptions — the act of adapting.
- additions — Plural form of addition.
- addressor — a speech or written statement, usually formal, directed to a particular group of persons: the president's address on the state of the economy.
- adductors — Plural form of adductor.
- adenosine — a nucleoside formed by the condensation of adenine and ribose. It is present in all living cells in a combined form, as in ribonucleic acids. Formula: C10H13N5O4
- adeodatus — Saint, died a.d. 676, pope 672–676.
- adhesions — Plural form of adhesion.
- adiposity — the state of being fat; obesity
- admission — Admission is permission given to a person to enter a place, or permission given to a country to enter an organization. Admission is also the act of entering a place.
- adoptions — Plural form of adoption.
- adoptious — adopted
- adsorbant — Adsorbent.
- adsorbate — a substance that has been or is to be adsorbed on a surface
- adsorbent — capable of adsorption
- adsorbing — Present participle of adsorb.
- adversion — (obsolete) An adverting or turning towards; attention.
- advocates — Third-person singular simple present indicative form of advocate.
- aedoeagus — aedeagus.
- aegrotats — Plural form of aegrotat.
- aepyornis — any of the large extinct flightless birds of the genus Aepyornis, remains of which have been found in Madagascar
- aerofoils — Plural form of aerofoil.
- aerograms — Plural form of aerogram.
- aerolites — Plural form of aerolite.
- aeronauts — A traveler in a hot-air balloon, airship, or other flying craft.
- aeropause — the region of the upper atmosphere above which aircraft cannot fly
- aeropulse — a pulsejet engine
- aeroscope — a device that collects bacteria from the air, used for observing the atmosphere
- aeroshell — a protective shield, containing a parachute, which slows a spacecraft during re-entry to the earth's atmosphere and landing
- aerospace — Aerospace companies are involved in developing and making rockets, missiles, space vehicles, and related equipment.
- aerospike — a type of rocket engine
- aerostats — Plural form of aerostat.
- aerotaxis — the movement of organisms towards or away from oxygen caused by changes in oxygen concentration
- afforests — Third-person singular simple present indicative form of afforest.
- aforesaid — Aforesaid means the same as aforementioned.
- aforesayd — Obsolete spelling of aforesaid.
- aftermost — closer or closest to the rear or (in a vessel) the stern; last