Abdomen :: Abdomen (n.) The belly, or that part of the body between the thorax and the pelvis. Also, the cavity of the belly, which is lined by the peritoneum, and contains the stomach, bowels, and other viscera. In man, often restricted to the part between the diaphragm and the commencement of the pelvis, the remainder being called the pelvic cavity..
Abdomen :: Abdomen (n.) The posterior section of the body, behind the thorax, in insects, crustaceans, and other Arthropoda..
Accelerometer :: Accelerometer (n.) An apparatus for measuring the velocity imparted by gunpowder.
Acromegaly :: Acromegaly (n.) Chronic enlargement of the extremities and face.
Actinomere :: Actinomere (n.) One of the radial segments composing the body of one of the Coelenterata.
Actinometer :: Actinometer (n.) An instrument for measuring the direct heating power of the sun's rays.
Actinometer :: Actinometer (n.) An instrument for measuring the actinic effect of rays of light.
Actinometric :: Actinometric (a.) Pertaining to the measurement of the intensity of the solar rays, either (a) heating, or (b) actinic..
Actinometry :: Actinometry (n.) The measurement of the force of solar radiation.
Actinometry :: Actinometry (n.) The measurement of the chemical or actinic energy of light.
Actinosome :: Actinosome (n.) The entire body of a coelenterate.
Actinostome :: Actinostome (n.) The mouth or anterior opening of a coelenterate animal.
Adventuresome :: Adventuresome (a.) Full of risk; adventurous; venturesome.
Aerometer :: Aerometer (n.) An instrument for ascertaining the weight or density of air and gases.
Aerometric :: Aerometric (a.) Of or pertaining to aerometry; as, aerometric investigations..
Aerometry :: Aerometry (n.) The science of measuring the air, including the doctrine of its pressure, elasticity, rarefaction, and condensation; pneumatics..