Physiological sensation received by the ear, originating in a vibration that communicates itself as a pressure variation in the air and travels in every direction, spreading out as an expanding sphere. All sound waves in air travel with a speed dependent on the temperature; under ordinary conditions, this is about 330 m/1,070 ft per second. The pitch of the sound depends on the number of vibrations imposed on the air per second, but the speed is unaffected. The loudness of a sound is dependent primarily on the amplitude of the vibration of the air.
The lowest note audible to a human being has a frequency of about 20 hertz (vibrations per second), and the highest one of about 15,000 Hz; the lower limit of this range varies little with the person's age, but the upper range falls steadily from adolescence onward.
1. The sudden occurrence of an audible event; SYN. noise.
2. The particular auditory effect produced by a given cause; or
3. The subjective sensation of hearing something; SYN. auditory sensation, noise.
4. Audible vibrations transmitted through the air (or other medium)
5. A large ocean inlet or deep bay

1. In good condition; free from defect or damage or decay
2. Free from moral defect
3. Thorough
4. Financially secure and safe

ETYM Old Eng. sounen, sownen, Old Fren. soner, suner, French sonner, from Latin sonare. Related to Sound a noise.
1. To make a certain noise or sound; SYN. go.
2. To give off a certain sound or sounds.
3. To cause to sound.
4. To announce by means of a sound.
5. To appear in a certain way.

, the (Swedish and Danish Řresund) Strait dividing SW Sweden from Denmark and linking the Kattegat strait and the Baltic Sea; length 113 km/70 mi; width between 5–60 km/3–37 mi.