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1. a monetary unit of American Samoa, Andorra, Antigua and Barbuda, Aruba, Australia, Austria, the Bahamas, Barbados, Belgium, Belize, Bermuda, Bosnia and Hercegovina, Brunei, Canada, the Cayman Islands, Cyprus, Dominica, East Timor, Ecuador, El Salvador, Ethiopia, Fiji, Finland, France, French Guiana, Germany, Greece, Grenada, Guadeloupe, Guam, Guyana, Hong Kong, Ireland, Jamaica, Kenya, Kiribati, Kosovo, Liberia, Luxembourg, Malaysia, Malta, the Marshall Islands, Martinique, Mauritius, Mayotte, Micronesia, Monaco, Montenegro, Namibia, Nauru, the Netherlands, the Netherlands Antilles, New Zealand, the Northern Mariana Islands, Palau, Portugal, Puerto Rico, Réunion, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, San Marino, the Seychelles, Sierra Leone, Singapore, the Solomon Islands, Somalia, South Africa, Spain, Sri Lanka, Surinam, Swaziland, Taiwan, Tanzania, Trinidad and Tobago, Tuvalu, Uganda, the United States, the Vatican City, the Virgin Islands, and Zimbabwe. It is worth one hundredth of their respective standard units
2. an interval of pitch between two frequencies f2 and f1 equal to 3986.31 log (f2/f1); one twelve-hundredth of the interval between two frequencies having the ratio 1:2 (an octave)
a unit of frequency interval, equal to 1/1,200 of an octave. The ratio of the upper and lower frequencies of an interval corresponding to a cent is equal to the 1,200th root of 2, or 1.006.
The interval between two sounds whose basic frequency ratio is the twelve-hundredth root of 2; the interval, in cents, between any two frequencies is 1200 times the logarithm to the base 2 of the frequency ratio.
A unit of nuclear reactivity equal to one-hundredth of a dollar.