It's helpful to provide more context if you remember anything else about this "considerata poem." For example:
* Where did you encounter this term? (book, website, conversation)
* What was the context? (was it describing a specific poem, a literary movement, or a poetic device?)
* Do you remember any other details about it? (like the name of the author or the subject matter)
With more information, we might be able to figure out what you're thinking of!