decanal /dɪˈkeɪn.əl/adjective 1/ˈdɛkənæl/ noun 1forms 2 adjective1 •Pertaining to a dean or deanery. decanal /ˈdɛkənæl/ noun1 •The aliphatic aldehyde, CH₃(CH₂)₈CHO, related to capric acid formsmore decanal · most decanal