Per saltum is a Latin phrase, meaning “hopping”. It is used to mean that someone has reached a position or degree without going through the posts or lower grades according to the established order. For example, as in some Protestant churches, being consecrated bishop without first being ordained priest.
The phrase is also used in the legal term certiorari per saltum, meaning the possibility of seeking a resolution before a higher court, bypassing intermediate courts.
References
Per saltum Wikipedia(Text) CC BY-SA