acoustic hypoesthesia (s) (noun)
, acoustic hypoesthesias (pl)
A partial loss of hearing or a reduced sensitivity to sounds: Mr. Smith, the lawyer, found that the acoustic hypoesthesia which Shirley experienced created difficulty in the courtroom when she needed to hear everything that was said.
acoustic lens (s) (noun)
, acoustic lenses (pl)
In ultrasonography, a lens used to focus or to diverge a sound beam which may be simulated by the electronic manipulations of signals: "Acoustic lenses are made of a material by which the speed of sound differs from that in the surrounding medium and the acoustic lenses may be solid, liquid, or gas."
acoustic microscope (s) (noun)
, acoustic microscopes (pl)
A device in which the object being studied is scanned with sound waves and its image is reconstructed with light waves: "In the field of medical surgery, the development of the acoustic microscope was praised as a break through innovation for noninvasive exploratory surgery."
acoustic trauma (s)
, acoustic traumas (pl) (nouns)
The damage caused to the cochlear structures (parts of the inner ears known as the organs of hearing) by high-intensity sound stimulations (loud noises) that have demonstrable negative effects on hearing: "Acoustic trauma is sometimes temporary in the initial stages, but it can result in permanent damage with the continued exposure to loud noises."
"To avoid having acoustic trauma, people should wear protective ear plugs or ear-cover protectors to minimize damage to their ears when using loud equipment."
"Everyone should be aware of risks of acoustic traumas that are connected with such activities as shooting guns, using chain saws, lawn mowers, driving motorcycles, or when using snowmobiles."
"Another way of avoiding acoustic trauma is to refrain from listening to loud music for long periods of time."
"Acoustic trauma can occur as a result of an individual's occupation; such as, rock musicians, constructions workers, airline ground crew members; or by using earphones and headphones, etc. with the volume turned up too much."
, more acridophobic, most acridophobic
Relating to the hatred of grasshoppers and locusts which consume great areas of vegetation: Some farmers in the midwest of the U.S. have severe acridophobic feelings regarding the plagues that such grain eaters cause, especially those who have lost their crops because of such devastators.
acrobat (s) (noun)
, acrobats (pl)
1. A performer on the trapeze, tightrope, etc. who "walks on tiptoe"; such as, walking on a wire high above the ground.
2. A skilled performer of gymnastic feats; such as, walking on a tightrope or swinging on a trapeze.
3. Etymology: from French acrobate, from Greek akrobates, "rope dancer, gymnastic performer"; related to akrobatos, "going on tip-toe, climbing up high"; from akros "topmost, at the end point" + bainein, "to walk, to go".
, more acrocentric, most acrocentric
A type of chromosome having the centromere near one end of the replicating chromosome, so that one arm is much longer than the other.
In early Greek sculpture, a statue with a stone head, hands, and feet, and a wooden trunk.
Pertaining to or affecting the end of a limb, or limbs (arms or legs).
, more acronarcotic, most acronarcotic
Pertaining to having both acrid (sharp, pungent) and qualities of insensibility.
, more acronymic, most acronymic
1. Description of a word formed from the first (or first few) letters of a series of words; as with radar, which comes from radio detecting and ranging; NATO, which comes from North Atlantic Treaty Organization; scuba, which comes from self-contained underwater apparatus; and sonar, which comes from sound navigation ranging.
2. Characteristics of words created from the initial letters of a phrase; for example, "Random Access Memory" becomes RAM, pronounced as the word "ram"; and the scientific term LASER is a result of "Light Amplification by Stimulated Emission of Radiation".
, more acrophonic, most acrophonic
Referring to the use of symbols to represent sounds.
Facing towards the apex, opposite of basiscopic.
Facing upwards, or to view, towards the apex (tip) of the axis on which something is borne or carried.
1. Pertaining to the absence or weakness of the pulse.
2. Pertaining to the surface or outside of certain diseases.