Scientifically and literally, True or False: Anything that can be defined exists.?

I don't understand the question. You already answered it yourself. Cap'n' Crunch, etc. can be defined and they don't exist. So what else do you want to know?

Every'thing' exists!

Thoughts are things.

Thoughts exist.

Thought content must, therefore exist!

Not everything that exists/perceived can be defined.

The definition of all that can be defined is;

That which is perceived exists!

That which exists is perceived!

Not a thing exists that is not perceived!

Not a thing is perceived that does not exist!

(There is no, nor can there be, any evidence to the contrary!)

All inclusive!!!

Every Perspective is unique, by definition/nature.

"For every Perspective, there is an equal and opposite Perspective!" - The First Law of Soul Dynamics (Book of Fudd)

"The complete Universe (Reality/Truth/God/'Self!'/Tao/Brahman..… or any feature herein...) can be defined/described as the synchronous sum-total of all Perspectives!" - Book of Fudd

ALL INCLUSIVE!!!

Everything that is 'defined', exists!

Everything exists!

well yes.

cap n crunch is a captain for a cereal, a cartoon character,

easter bunny is a pagan symbol for fertility

scooby, well that's a hollywood legend.

Well I don't believe they physically exist. But the idea, formed by humans, certainly exists. Though the idea may be understood and perceived in different ways.

exists means physical in this context. Existing has to mean something with differnt boundries than the universal set or else the word is useless and meaningless.

Yes they exist in our minds.. that's redefining it though

false

can you define NOTHING?