insulator
UK: ˈɪnsjʊleɪtə | US: ˈɪnsəleɪtər
n. a material or device that prevents the passage of heat, electricity, or sound
n. a substance that resists electrical current
n. (biology) a structure that blocks the transfer of energy or particles
insulator = insula<island> + tor<noun suffix indicating agent or tool>
- insula (Latin: "island") → Metaphorically extended to mean "isolated" or "separated."
- tor (Latin-derived suffix: denotes an agent or instrument performing an action) → Used to form nouns like "generator" or "protector."
Etymology Origin:
The word "insulator" originates from the Latin insula ("island"), reflecting the idea of isolation. In physics, an insulator "isolates" energy flow, much like an island is separated from the mainland. The suffix -tor (from Latin -tor) was added to signify a tool or agent that performs this function. The term evolved in the 18th century to describe materials that block heat or electricity, aligning with its root meaning of separation.
Rubber is an effective insulator against electric current.
The house was built with thick walls to serve as a heat insulator.
Glass acts as an insulator in double-pane windows.
Air is a poor conductor but a good thermal insulator.
The biologist studied the role of fat as a natural insulator in marine mammals.