mag·ne·to·tax·is 
(măg-nē′tō-tăksĭs)
(măg-nē′tō-tăksĭs)n.
The movement exhibited by magnetite-containing bacteria that orient themselves along the lines of the earth's magnetic field.
mag·ne′to·tactic adj.
- institutionally
- institutor
- in stock
- in store
- instr.
- instroke
- instruct
- instruction
- instructional
- instructive
- instructively
- instructiveness
- instructor
- instructorship
- instrument
- instrumental
- instrumentalism
- instrumentalist
- instrumentality
- instrumentally
- instrumentation
- instrument flying
- instrument landing
- instrument panel
- insubordinate