scal·able I. \ˈskāləbəl\adjective Etymology:scale (VII) + -able : capable of being scaled • scal·able·nessnoun-es • scal·ably\-blē\adverb II. adjective (-es) of a computer system: capable of being easily expanded or upgraded on demand • scal·abil·i·ty\ˌskāləˈbiləd.ē, -ətē \noun