adj. 1. Deviating from a square, circular, or spherical form by being elongated in one direction. 2. Having the shape of or resembling a rectangle or ellipse. 3. Botany Having an elongated form with approximately parallel sides: an oblong leaf. n. An object or figure, such as a rectangle, with an elongated shape. [Middle English, from Latin oblongus : ob-, intensive pref. (sense uncertain); see OB- + longus, long; see del-1 in the Appendix of Indo-European roots.] |
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