geosynclinal
Speech parts
1. geosynclinal - Noun
2. geosynclinal - Adjective
Meaning
the downward bend or subsidence of the earth's crust, which allows of the gradual accumulation of sediment, and hence forms the first step in the making of a mountain range; -- opposed to geanticlinal.
Source: Webster's dictionarySynonyms
serpentine
curved
bent
wavy
tortuous
sinuous
billowy
curvaceous
labyrinthine
curvy
incurved
undulant
meandering