Ístrice, an Vrchin, a Porkepine.

Istríngere, as Stríngere.

Istrionia, the professing of an Historian.

Istrología, as Astrología.

Istrólogo, as Astrólogo.

Istromẻnto, any kind of instrument.

Istroncáre, as Stroncáre.

Istrónzo, as Strónzo.

ISV Istruffáre, as Struffáre.

Istrúffo, as Strúffo.