Definition of macropore
: a pore (as in coal) of comparatively large size; especially : a pore in soil of such size that water drains from it by gravity and is not held by capillary action
macroporous\¦makrə¦pōrəs, (ˈ)ma¦kräpərəs\ adjective
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Origin and Etymology of macropore
macr- + pore
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