From Wiktionary, the free dictionary
From inter- + veinal.
interveinal (not comparable)
- (chiefly botany) Occurring between veins.
2000, P. J. Keane, Diseases and Pathogens of Eucalypts, →ISBN, page 392:In E. tereticornis, deficiency begins as interveinal chlorosis [yellowing] of young leaves with tissue near the veins remaining green.
