1(especially of the cause of something) closest in relationship; immediate:the fact that a storm may show up the poor condition of a flat roof does not signify that storm was the proximate cause of damage to it
closest in space or time:the failure of the proximate military power to lend assistance
2nearly accurate; approximate:he would try to change her speech into proximate ladylikeness
late 16th century: from Latin proximatus 'drawn near', past participle of proximare, from proximus 'nearest'
proximate in other Oxford dictionaries
Definition of proximate in the US English dictionary