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Affixes: the building blocks of English
Affixes: the building blocks of English
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gonio-

Angle.

[Greek gōnia, angle.]

A goniometer is an instrument that measures angles, especially those between the faces of crystals; goniometry is the study of such angular relationships. In medicine, a gonioscope is an optical instrument used for viewing otherwise hidden structures within the eye; goniotomy (Greek -tomia, cutting) is an eye operation for congenital glaucoma in which a incision is made at the junction of the cornea and sclera within the eye.

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