Verb
dawn upon (third-person singular simple present dawns upon, present participle dawning upon, simple past and past participle dawned upon)
Alternative form of dawn on
Like the dawn upon a dream Slowly through the scented gloom Crept once more the ruddy gleam O'er the friendly nursery room. There, before our waking eyes, Large and ghostly, white and dim, Dreamed the Flower that never dies, Opening wide its rosy rim. Alfred Noyes