Sprawl
Part of speech: noun
Definition: An ungainly sprawling posture. A straggling, haphazard growth, especially of housing on the edge of a city.
Part of speech: verb
Definition: To sit with the limbs spread out. To spread out in a disorderly fashion; to straggle.
Conurbation
Part of speech: noun
Definition: a continuous aggregation of built-up urban communities created as a result of urban sprawl