We don't have synonyms for flip angle yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are slip angle.
(N) :
In magnetic resonance imaging, the flip angle, also called the nutation angle, pulse angle, tip angle, or excitation angle, refers to the angle that the magnetization vector is tipped or rotated away from the z-axis by a radiofrequency pulse, relative to the main magnetic field.
(N) :
In magnetic resonance imaging, the flip angle, also called the nutation angle, pulse angle, tip angle, or excitation angle, refers to the angle that the magnetization vector is tipped or rotated away from the z-axis by a radiofrequency pulse, relative to the main magnetic field.