ascian: inhabitant of the equatorial zone
askefise: one who blows on ashes to bring them to flame
asperity: roughness of surface or sound
asportation: to carry property away wrongfully
assiduity: persevering application to a pursuit
assuetude: accustomedness; habit
astern: at the stern of a ship
astraphobia: fear of being struck by lightning
astrobolism: sun-stroke
astrometeorology: study of effect of stars on climate
atactic: irregular
athanasy: deathlessness
athetosis: nervous twitching of digits and extremities