prograde

From pro- (“forward”) + -grade (“direction”).

• (Received Pronunciation) IPA^(key): /ˈpɹəʊɡɹeɪd/
• (General American) IPA^(key): /ˈpɹoʊɡɹeɪd/

• Audio (Southern England):

  (file)

prograde (comparative more prograde, superlative most prograde)

1. (astronomy) Moving in a forward direction, especially with respect to other bodies in the same system.
2. (geology) Being a metamorphic change resulting from a higher pressure or temperature.

• retrograde

prograde (third-person singular simple present progrades, present participle prograding, simple past and past participle prograded)

1. (geology) Of sediment, to build out seawards in conditions of marine regression.
   • 1992, R.H Workum, A.S. Hedinger, Geological Survey of Canada, Open File 2509, page 41:

     In some localities the bank margins of several cycles are stacked above each other^[sic], in other places they backstep or prograde relative to each other.

• progradation

• drag rope, drag-rope