DictionaryRoot: thousandth
English
thousandth
one of a thousand equal parts
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noun
thou
One thousandth of an inch.
Etymology
Thou is a shortening of thousandth. Engineering uses it for one thousandth of an inch.
one of a thousand equal parts
One thousandth of an inch.
Thou is a shortening of thousandth. Engineering uses it for one thousandth of an inch.