a/o

See also: Appendix:Variations of "ao"

English

Etymology

A typescript approximation of a percent sign % with the top zero replaced with 'a' for atom.

Noun

a/o (uncountable)

  1. (physical chemistry) atomic percent (percent calculated by number of atoms)
    a Pu-Fe eutectic mixture (9.5 a/o Fe)
    Synonyms: m/o, at%
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