What is another word for principal axis?
Pronunciation: [pɹˈɪnsɪpə͡l ˈaksɪs] (IPA) 
There are several synonyms for the word "principal axis". One such synonym is "major axis", which refers to the longest axis of an object or system. Another synonym is "main axis", which refers to the primary or most important axis of an object or system. Additionally, "central axis" can also be used to describe the principal axis, as it denotes the axis that passes through the center of an object or system. Other synonyms for principal axis include "primary axis", "dominant axis", and "primary line". These various synonyms can be used interchangeably depending on the context in which they are being used.
