Intercooled

Part of speech: adjective

Definitions

1. Referring to an engine system that uses a separate cooling mechanism to lower the temperature of the intake air before it enters the combustion chamber
2. Describing a process in automotive engineering where air is cooled after being compressed to increase efficiency before combustion
3. Pertaining to a component that enhances engine performance by cooling the charge air, thus improving power output and reducing heat-related issues

Etymology: "Intercooled" is the past participle of "intercool," which joins the prefix "inter-," meaning "between" or "in the middle," to "cool." In engineering, the idea is literal: air compressed in a turbocharger or multi-stage compressor gets hot, and passing it through a cooler between stages lowers its temperature before the next stage compresses it again. An intercooled engine or compressor is one fitted with such a cooler, so the word describes a machine that has been given a cooling step partway through its process rather than a single cooling at the end. The construction is a plain one. "Inter-" has been productive in English for centuries, attaching to verbs and nouns to mean "between" or "among," as in "intermix" or "interweave," and engineers used it freely to name intermediate stages of a process. "Cool" is an ordinary Old English word, so the coinage combines two long-established parts without any special borrowing.