angstrom

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation

Etymology

Borrowed from Swedish ångström, named after Swedish physicist Anders Jonas Ångström.

In classic literature

Synonyms

angstrom unit, A

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