[in.su.lar] adj [LL insularis, fr. L insula island] (1611) 1 a: of, relating to, or constituting an island b: dwelling or situated on an island "~ residents"
2: characteristic of an isolated people; esp: being, having, or reflecting a narrow provincial viewpoint
3: of or relating to an island of cells or tissue -- in.su.lar.ism n -- in.su.lar.i.ty n -- in.su.lar.ly adv