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ACROSS
1)  an arithmetic operation performed on floating-point numbers
2)  a deposit of valuable ore occurring within definite boundaries separating it from surrounding rocks
3)  an elaborate song for solo voice
4)  the cardinal number that is the sum of nine and one; the base of the decimal system


DOWN
1)  a level tract of land
2)  knowledge gained through tradition or anecdote
3)  (norse mythology) ruler of the aesir; supreme god of war and poetry and knowledge and wisdom (for which he gave an eye) and husband of frigg; identified with the teutonic wotan
4)  seed of a pea plant used for food

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flop
lode
aria
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