Aeroscope :: Aeroscope (n.) An apparatus designed for collecting spores, germs, bacteria, etc., suspended in the air..
Aeroscopy :: Aeroscopy (n.) The observation of the state and variations of the atmosphere.
Aethrioscope :: Aethrioscope (n.) An instrument consisting in part of a differential thermometer. It is used for measuring changes of temperature produced by different conditions of the sky, as when clear or clouded..
Alethoscope :: Alethoscope (n.) An instrument for viewing pictures by means of a lens, so as to present them in their natural proportions and relations..
Altiscope :: Altiscope (n.) An arrangement of lenses and mirrors which enables a person to see an object in spite of intervening objects.
Anemoscope :: Anemoscope (n.) An instrument which shows the direction of the wind; a wind vane; a weathercock; -- usually applied to a contrivance consisting of a vane above, connected in the building with a dial or index with pointers to show the changes of the wind..
Angioscope :: Angioscope (n.) An instrument for examining the capillary vessels of animals and plants.
Anorthoscope :: Anorthoscope (n.) An optical toy for producing amusing figures or pictures by means of two revolving disks, on one of which distorted figures are painted..
Anthroposcopy :: Anthroposcopy (n.) The art of discovering or judging of a man's character, passions. and inclinations from a study of his visible features..
Aplacophora :: Aplacophora (n. pl.) A division of Amphineura in which the body is naked or covered with slender spines or setae, but is without shelly plates..
Apocopate :: Apocopate (v. t.) To cut off or drop; as, to apocopate a word, or the last letter, syllable, or part of a word..