Wiktionary
vb. (context idiomatic English) To gain widespread acceptance in a group or society, especially where there was not any before.
Usage examples of "come in from the cold".
With fifteen thousand pounds, a gratuity and a pension from the Circus, a man--as Control would say--can afford to come in from the cold.
She saw the vagrants who'd come in from the cold and would soon be rousted out again by security.
The technicians, who had just come in from the cold, kept their coats on.
He would come in from the cold, to find Nighteyes sprawled on his hearth, and my hands full of yarn from some project of Holly's needles, and he would immediately find some other task that she must do for him.
He had not noticed the scent when he had come in from the cold, wet street.
If the truth be told, it's a fairly daunting task to convince any abused woman on the run to come in from the cold.
Two more had been lost before rescue could be mobilized and one victim had relayed an alien invitation to come in from the cold of interplanetary space.