ábaco neperiano

== Spanish == === Pronunciation === IPA(key): /ˌabako nepeˈɾjano/ [ˌa.β̞a.ko ne.peˈɾja.no] Syllabification: á‧ba‧co ne‧pe‧ria‧no === Noun === ábaco neperiano m (plural ábacos neperianos) Napier's bones