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double-space

v. type with a full space between lines

Usage examples of "double-space".

When it came back, forty-five pages double-spaced, Colleen suggested that he might consider cutting it for submission.

There he tore open the old lady's envelope and studied the message, which was typed double-spaced on ordinary notebook paper.

We'll either get him with this or not at all On plain paper, double-spaced, two carbons.