(Greek: a suffix; pertaining to; of the nature of, like; in chemistry, it denotes a higher valence of the element than is expressed by -ous)

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) (noun), acoustic traumas (pl)
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, construction workers, airline ground crew members, or by using earphones and headphones, etc. with the volume turned up too much.

acridophobic (adjective), 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.: A person who "walks on tiptoes", such as walking on a wire high above the ground, is called an acrobat!.
2. A skilled performer of gymnastic feats: An acrobat can walk on a tightrope or can swing on a trapeze, for example.
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".
acrocentric (adjective), more acrocentric, most acrocentric
In genetics, a type of chromosome having the centromere near one end of the replicating chromosome: An acrocentric chromosome has one chromosomal arm that is much longer than the other one.
acrolith (s) (noun), acroliths (pl)
In early Greek sculpture, a statue with a stone head, hands, and feet, and a wooden trunk: The acrolith that Susan saw in the museum had clothes on some wooden parts, while the other exposed sections, like the head and feet, were made of marble.
acromelic (adjective) (not comparable)
Relating to the terminal parts of a person's extremities: An acromelic disorder usually affects the ends of an individual's limbs, like the arms or legs.
acronarcotic (adjective), more acronarcotic, most acronarcotic
Pertaining to a matter which is both acrid (sharp, pungent) and narcotic: A substance of an acronarcotic nature is poisonous, can be quite irritating when applied locally on the body, and can produce stupor, a coma, convulsions, or even paralysis.
acronymic (adjective), more acronymic, most acronymic
1. Description of a word formed from the first (or first few) letters of a series of words: Examples formed in an acronymic way are 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. Characteristic of words created from the initial letters of a phrase: Such acronymic examples are "Random Access Memory" which becomes RAM, pronounced as the word "ram", and the scientific term LASER that is a result of "Light Amplification by Stimulated Emission of Radiation".
acrophonic (adjective), more acrophonic, most acrophonic
Referring to the use of symbols to represent sounds: An acrophonic alphabet is one that uses pictographs to represent the aword beginning with the sound of that letter.

The Greek, Hebrew, and Roman alphabets were derived from the early acrophonic alphabet of Canaanites.

acroscopic (adjective) (not comparable)
In botany, referring to a part of a plant facing upwards towards the apex (tip) of the axis on which something is borne or carried: Mr. Root, the biology teacher, told his students to go out and take photos of acroscopic leaves or branches to show the class the next day.
acroscopic (adjective) (not comparable)
In botany, referring to a part of a plant facing upwards towards the apex (tip) of the axis on which something is borne or carried: Mr. Root, the biology teacher, told his students to go out and take photos of acroscopic leaves or branches to show the class the next day.
acrotic (adjective) (not comparable)
1. Pertaining to the absence or weakness of the pulse; pulseless: When Mary checked her heart beat, she was happy to feel her pulse, so she didn't have an acrotic condition as she had thought!
2. Pertaining to the surface of the body: When Dr. Black checked the acrotic skin parts of Susan's body, she didn't see any unusual developments of moles or birth marks.
acrotrophic (adjective), more acrontrophic, most acrotrophic
In zoology, concerning viteilligenous substances in cells which are grouped at the apex of the follicular tube: Acrotrophic cells refer to the ovariola of insects and are supposed to add nutrition to the developing ova.