(n)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.A, angstrom unit
[ぼうりょくだん, bouryokudan](n) gangster organization (organisation); crime syndicate; yakuza (Japanese mafia); band of thugs; group of hoodlums; (P)#10188[Add to Longdo]