Definition of peninsularity in US English:

peninsularity

noun

  • 1A narrow-minded character or outlook, of the sort supposed to result from living on a peninsula and thus having limited contact with other peoples; mental or intellectual isolation akin to insularity.

  • 2The fact of being a peninsula; peninsular nature.

Origin

Late 19th century; earliest use found in Grant Allen (1848–1899), writer on science and novelist. From peninsular + -ity, after insularity.

Pronunciation

peninsularity

/pɪˌnɪnsjʊˈlarɪti/