erotusluku

== Finnish == === Etymology === erotus +‎ luku === Pronunciation === IPA(key): /ˈerotusˌluku/, [ˈe̞ro̞t̪us̠ˌluku] Rhymes: -uku Syllabification(key): e‧ro‧tus‧lu‧ku Hyphenation(key): erotus‧luku === Noun === erotusluku (arithmetic) common difference (constant in arithmetic progression) ==== Declension ====