Trivikrama is a Sanskrit word that translates as "Three-Steps", and is used to describe the process of taking three steps.
Vishnu's epithet as a dwarf in his avatar, or incarnation
(Vamana).
The term comes from Vamana's request to the demon king Bali
for three paces of land, which he later increases to such a vast scale that
these three paces are used to measure the world.
Take a look at Vamana's avatar.