12-letter words starting with as
- assurbanipal — Ashurbanipal
- astacologist — a person who investigates and analyses crayfish
- astanga yoga — a revived ancient form of yoga that involves a fast and powerful series of movements
- asteriskless — having no asterisk
- astigmatizer — a cylindrical lens used in a rangefinder to draw out the point image of a point source into a line.
- astigmometer — an apparatus for measuring the degree of astigmatism.
- astigmoscope — astigmatoscope.
- astonishable — (obsolete) Astonishing.
- astonishment — Astonishment is a feeling of great surprise.
- astoundingly — capable of overwhelming with amazement; stunningly surprising.
- astral plane — a plane of existence inhabited by astral bodies
- astringently — In the manner of an astringent.
- astrobiology — the branch of biology that investigates the possibility of life elsewhere in the universe
- astrochemist — (chemistry, astronomy) A chemist or astronomer whose speciality is astrochemistry.
- astrocompass — a navigational instrument for giving directional bearings from the centre of the earth to a particular star. It is carried in long-range aircraft, ships, spacecraft, etc
- astrocytomas — Plural form of astrocytoma.
- astrodynamic — Pertaining to astrodynamics.
- astrogeology — the study of the structure, composition, and history of other planets and other bodies in the solar system
- astrological — the study that assumes and attempts to interpret the influence of the heavenly bodies on human affairs.
- astronautics — the science and technology of space flight
- astronomical — If you describe an amount, especially the cost of something as astronomical, you are emphasizing that it is very large indeed.
- astrophysics — Astrophysics is the study of the physical and chemical structure of the stars, planets, and other natural objects in space.
- astrotourist — a person who pays to travel into space as a form of recreation
- astroturfing — a PR tactic used in politics and advertising in which actors are paid to display overt and apparently spontaneous grassroots support for a particular product, policy, or event
- asymmetrical — Something that is asymmetrical has two sides or halves that are different in shape, size, or style.
- asymptomatic — If someone with a disease is asymptomatic, it means that they do not show any symptoms of the disease.
- asymptotical — of or relating to an asymptote.
- asynchronies — a lack of synchronism or coincidence in time.
- asynchronism — a lack of synchronism; occurrence at different times
- asynchronous — An asynchronous electric machine is one in which the magnetic field and the rotation are not exactly the same.