insularum
insularum is a Latin form of insula, meaning “island; apartment block”. It is the genitive plural feminine noun.
Found 33 times in the Latin texts on Socratos.
Where it is used
Cicero, De Natura Deorum 2.100: At vero quanta maris est pulchritudo, quae species universi, quae multitudo et varietas insularum, quae amoenitates orarum ac litorum, quot genera quamque disparia partim submersarum partim fluitantium et in …
All forms of insula (declension table)
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Lewis & Short, A Latin Dictionary (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.