Definition of "mereological" [mereological]

• Of or pertaining to mereology, a collection of axiomatic first-order theories dealing with parts and their respective wholes. (adjective)

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• "(This account is sometimes referred to as mereological nihilism, in contrast to the mereological universalism expressed by (P. 15) and the like; see van Inwagen 1990:"
• "Intuitively, a set of m is what we would now call a mereological sum, consisting of one or more m, but not necessarily all of the m."
• "So these are the mereological questions which beset elementary particles, but even if we successfully elucidate the quantum concepts of parts and wholes, we are still left with the question, 'What is an elementary particle?'."