词根词缀：delt-, delto-

【来源及含义】Greek: writing-tablet

【同源单词】deltiologist, deltiology

词根词缀：delta, delt-

【来源及含义】Greek: triangular; fourth letter; Δ, δ, of the Greek alphabet

【同源单词】delt, delta, Delta Aquarids, delta bar, delta connection, delta flat