a. [f. SPACE sb.1 + -Y.] Large, roomy, spacious. Hence Spaciness.

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1885.  Art Jrnl., 189/2. A sense of spaciness in the picture.

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1891.  C. T. C. James, Rom. Rigmarole, vii. 62. My study lamp … throwing a mellow light upon my desk, [and] my spacy blotting-pad.

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