angstrom

Từ điển WordNet v3.1 - WordNet Dictionary

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
• Syn:
angstrom unit, A
• Hypernyms:
metric linear unit
• Part Holonyms:
nanometer, nanometre, nm, millimicron, micromillimeter, micromillimetre
• Part Meronyms:
picometer, picometre, micromicron