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asthma a disease of the lungs that makes it difficult to breathe. Asthma is often caused by an allergy.
as though as if.
astir in action; moving.
astonish to fill with great surprise or amazement.
astonishment great surprise or amazement.
astound to cause surprise or wonder; amaze.
astray off the right or known path or course.
astride over or upon and with a leg on each side of. [2 definitions]
astrology the study of the influence that the stars and planets may have on people's lives.
astronaut a person trained to take part in space flight.
astronomer a scientist who studies the universe beyond the earth.
astronomical having to do with astronomy. [2 definitions]
astronomy the branch of science that studies the universe beyond the earth.
as well besides; also; too.
as well as and also.
as yet up until now.
asylum a place that offers safety. [3 definitions]
at1 on or in the location of. [5 definitions]
Atacama Desert an extremely dry region of northern Chile that lies between the Pacific Ocean and the Andes mountains.
at all in the smallest amount; in any way.
at all costs without considering the amount of work or effort needed.