Search dec- dec-, 1. prefix meaning “ten”: decagram, decaliter, decipara. 2. prefix meaning “tenth”: decigram, deciliter, decinormal. Tweet Telegram VK Random Words cosmetic dermatitis SL small saphenous vein Klebsiella lymphangiectasia humidification National Collaborating Centre for the Determinants of Health (NCCDH) hypnagogic neonatal jaundice