- the underlying layer of a ganoid scale, composed of connective tissue embedded with bone.
Also i·sop·e·dine [ahy-sop-i-din, -deen, -dahyn] /aɪˈsɒp ɪ dɪn, -ˌdin, -ˌdaɪn/.
Origin of isopedin
iso- + -pedin < Greek pedīnós level
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018