turning in an opposite direction or position; "the reversal
of the image in the lens" Synonym(s):reversal, turn around
v
turn abruptly and face the other way, either physically or
metaphorically; "He turned around to face his opponent"; "My conscience told me to turn around before I made a mistake" Synonym(s):swing around, swing about, turn around
improve dramatically; "The new strategy turned around sales"; "The tutor turned around my son's performance in math"
improve significantly; go from bad to good; "Her performance in school picked up" Synonym(s):turn around, pick up