"The Atrium," said the cool female voice and the golden grilles slid open, showing Harry a distant glimpse of the golden statues in the fountain.
Visitor to the Ministry, you are required to submit to a search and present your wand for registration at the security desk, which is located at the far end of the Atrium.
The doors slid open and they stepped out into the now almost-deserted Atrium.
The lift arrived; it was empty except for a flock of memos that flapped around Mr Weasley’s head as he pressed the button for the Atrium and the doors clanged shut.
It jangled and banged lower and lower; the grilles slid open and Harry dashed inside, now hammering the button marked ’Atrium’.
He dodged behind the Fountain of Magical Brethren: the spell zoomed past him and hit the wroughtgold gates at the other end of the Atrium so that they rang like bells.
Visitors to the Ministry, you are required to submit to a search and present your wands for registration at the security desk, which is located at the far end of the Atrium.
The polished wooden floor was gone from beneath his feet; the Atrium, Fudge and Dumbledore had all disappeared and he was flying forwards in a whirlwind of colour and sound …
Harry bent his knees and held his wand as ready as he could in such cramped conditions as he peered through the glass to see whether anybody was waiting for them in the Atrium, but it seemed to be completely empty.
The only sound in the Atrium was the steady rush of water from the golden fountain, where jets from the wands of the witch and wizard, the point of the centaur’s arrow, the tip of the goblin’s hat and the house-elf’s ears continued to gush into the surrounding pool.
’Yeah, I’m — where’s Voldemort, where — who are all these — what’s — The Atrium was full of people; the floor was reflecting the emerald green flames that had burst into life in all the fireplaces along one wall; and streams of witches and wizards were emerging from them.
He did not want to hear what Ron had to say; did not want to hear Ron tell him he had been stupid or suggest that they ought to go back to Hogwarts, but the heat was rising in his face and he felt as though he would like to skulk down here in the darkness for a long while before facing the brightness of the Atrium above and the others’ accusing stares… ’Have you seen this?’ said Ron, ’What?’ said Harry, but eagerly this time — it had to be a sign that Sirius had been there, a clue.
There are no more uses of "atria" in the book.
Show samples from other sources
A bustling crowd of men and women—many of whom clutched rags to their mouths—filled a huge atrium topped with a glass ceiling far above, letting in loads of sunshine.
James Dashner -- The Death Cure
On Thursday, he was in the atrium of Scales Center after my class.