That is that planet's "year", or its orbital period.
The planet that takes 88 days to make one trip around the sun is Mercury. It is the smallest planet in the solar system.
VenusIt completes one orbit around the sun in about 224.7 Earth days.
The Earth completes a revolution in its orbit around the sun every 365.25 days. (rounded)
Our planet takes 24 hours (one day)
The planet Mercury completes one orbital revolution around the sun in 88 earth days.
One rotation
An 'orbit', or more commonly, a year.Orbit.
Mars
Mercury has the shortest orbital period. It takes only 89.9691 days to make one complete trip around the sun.
PLUTO
The Earth completes a revolution when it travels around the sun.
Jupiter