Given the task definition and input, reply with output. In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

A GV star , or yellow dwarf , is a main-sequence star .

A G-type main-sequence star ( Spectral type : G-V ) , often ( and imprecisely ) called a yellow dwarf , or G dwarf star , is a main-sequence star ( luminosity class V ) of spectral type G.