The American Heritage® Dictionary of the English Language, 4th Edition
n. A subjective unit of loudness, as perceived by a person with normal hearing, equal to the loudness of a pure tone having a frequency of 1,000 hertz at 40 decibels.
n. a subjective unit of loudness for an average listener equal to the loudness of a 1000-hertz sound that has an intensity 40 decibels above the listener's own threshold of hearing
The Century Dictionary and Cyclopedia
An old spelling of soon.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a unit of perceived loudness equal to the loudness of a 1000-hertz tone at 40 dB above threshold
Word Usage
"_ O how like to the sone is the mother, for he hath left to vs so moche blood here in erthe, & she so moche mylke, that a man wyl skarysly beleue a woman to haue so moche mylke of one chylde, in case the chyld shuld sukke none at all."