Of or relating to forward movement in space. Astronomy. = direct, adj. 3, prograde, adj. 1. Now rare.

Of, relating to, or involving progression (in various senses); progressing, progressive.

That is moving forward or upward; approaching.

Directed towards a point in advance, onward; also ‘outward’ as opposed to ‘return’.

Going forward; progressing, advancing. rare.

Directed or moving onward or forward; advancing.

Having the quality of proceeding or going forward; progressive.

That drives on; that drives something on.

That propagates (in various senses).