bicron

English

Noun

bicron (plural bicrons)

  1. A billionth (short scale) of a metre, represented by μμ; a nanometre.
  2. A billionth (long scale) or a trillionth (short scale) of a metre, represented by μμ; a picometre.

Usage notes

Sense 1 is the original definition of the bicron as given in Houston and Kennelly, On Certain New Prefixes Proposed for Physical Unit Magnitudes (1894).[1] Sense 2, also attested, possibly arose from a misinterpretation based on the symbol for the bicron, μμ, or differences between the long scale and the short scale.[2]

References

  1. ^ Sizes.com (via Internet Archive) (2009-10-12). "bicro—, bicron". https://web.archive.org/web/20231209023426/https://www.sizes.com/units/bicron.htm
  2. ^ Rowlett, Russ (2018-04-24). "A Dictionary of Units of Measurement: B". https://www.ibiblio.org/units/dictB.html

Anagrams

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