megaslump means A very large (geological) slump. Lexicurio rates it Sui generis — a strength score of 95 out of 100.
Etymology
From mega- + slump.
noun
- A very large (geological) slump.“[...] slumping event, such as the Lavaca "Megaslump" event of south Texas, this effect may have caused uplift of several to a few tens of meters of footwall areas within about 100 km from the slump. Larger downslope movements such as[…]”
- A particularly significant (long, severe, etc) slump (period of poor performance).“... slumps, contortions, and tensions of all kinds. And for many kids, the teenage years are a permanent megaslump. Now go to a mall or church or anyplace you can observe families. Watch parents and children walking together and you will[…]”