"Protean."
"Yes. Its protean manifestations are a clue to its habits. It is rooted to the spot, like a plant."
"Like Venus' flytrap?" Guenther suggested.
"Yes," the biology teacher approved. "Dionaea muscipula is a cogent example of the sort of plant I'm talking about. By the way, don't you think we ought to name this thing? We've been calling it 'creature' and 'monster' and all sorts of things. Most unscientific."
"We might call it Rete proteanus," Miss MacIntire suggested from her third-row seat. "A 'many-formed trap', you know."
"No, we want a name which suggests its origin as well as its habits."
"It's not of this world, nor of the known solar system," Mr. Tedder commented.
"That's it. It's an extra-solar; no, an extra-galactic being-of-many-forms."
"Polymorph metagalacticus," Miss MacIntire said. "Not an inspired name, but it will do, it will suffice."
Mr. Coar stared at the empty space between the telegraph key and the bank of lithium-reaction cells. His pot of geraniums appeared again, then the scarlet flowers wavered, faded, and became gold-and-purple pansies. "Polymorph it is," the principal said. His air was that of a bishop conferring imprimatur upon a lay brother's interpretation of a Gospel passage.