[-iasis] n suffix, pl -iases [NL, fr. L, fr. Gk, suffix of action, fr. denominative verbs in -ian, -iazein]: disease having characteristics of or produced by (something specified) "onchocerciasis" "ancylostomiasis"
-IASIS
Meaning of -IASIS in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012