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From our dictionary:

ru•di•men•ta•ry

Pronunciation: (rOO"du-men'tu-rE, -trE), [key]
adj.
1. pertaining to rudiments or first principles; elementary: a rudimentary knowledge of geometry.
2. of the nature of a rudiment; undeveloped or vestigial.
3. primitive. Also,ru"di•men'tal.

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