The axial plane is a transverse plane relative to a standing person.

axial plane in blue
The blue colour shows the axial plane.

 

Analogy

If you decided to squeeze down a manhole in the pavement, then the pavement would be in an axial plane in relation to your body.

Synonyms: 
transverse plane
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Dr Sheila Strover (Editor)
BSc (Hons), MB BCh, MBA

See biography...