FROM STRONG’S GREEK DICTIONARY (1890)

Strong’s Greek Dictionary (1890) — public domain, printed whole.

proistemi προΐστημι — pro-is'-tay-mee — from 4253 and 2476; to stand before, i.e. (in rank) to preside, or (by implication) to practise:--maintain, be over, rule.

see GREEK for 4253

see GREEK for 2476