adi·ag·nos·tic
| \ ¦ā-ˌdī-əg-¦nä-stik \
Definition of adiagnostic
: having the constituents not distinctly separated but blending together in polarized light under the microscope
—used of a rock texture
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Merriam-Webster unabridged
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Time Traveler for adiagnostic
The first known use of adiagnostic was circa 1909
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