protasis
/ˈprɒtəsɪs/noun
(pl. protases /-siːz/)
- Grammar the clause expressing the condition in a conditional sentence (e.g. if you asked me in if you asked me I would agree).【语法】条件从句, 前提分句（如if you asked me I would agree中的if you asked me）。常与APODOSIS相对。
词源
late 16th cent.: via Latin from Greek protasis 'proposition'，from pro 'before'+teinein 'to stretch'.