megamodel means A megascale model. Lexicurio rates it Rare gem — a strength score of 84 out of 100.
Etymology
From mega- + model.
noun
- A megascale model.“The St. Louis model also seems to perform well without the large number of extraneous variables—oil prices, coal miners' wage rates, the stock of used cars, etc., all of which tend to contribute to the cumbersomeness of the megamodels.”