Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun upthrust
1 sense of upthrust
Sense 1
upheaval, uplift, upthrow, upthrust -- ((geology) a rise of land to a higher elevation (as in the process of mountain building))
=> rise, rising, ascent, ascension -- (a movement upward; "they cheered the rise of the hot-air balloon")