Here’s how Bosch Sensortec structures the nomenclature for their parts (Ex.: BMX series):
The Bosch Sensortec product naming convention is the following:
1st Letter : Manufacturer
B - Bosch
2nd Letter : Device type
H - Hub
M - MEMS
N - Node
3rd Letter : Sensor type
A - Accelerometer
C - Compass (accelerometer + magnetometer)
E - Environmental
F - Freely Programmable
G - Gyroscope
I - IMU (accelerometer + gyroscope)
L - Light
M - Magnetometer
O - Orientation
P - Pressure
V - Vital
X - 9-aXis (accelerometer + gyroscope + magnetometer)
Therefore the meaning of BMX is “Bosch MEMS 9-axis.”
All information was provided by Bosch Sensortec’s Forum.