- 1暖氣機（房間用）；水箱（汽車引擎用）
A radiator has two common, very different jobs, so check the context. In a house in a cold country, a radiator is a metal object, often under a window, that heats the room using hot water or steam running through it. In a car, the radiator is a part of the engine that keeps it from overheating, by cooling down hot water that has absorbed heat from the engine.
From the word’s history
From radiate + -or.
radiate「散發」加上 -or。
組成radiate (to send out in all directions, like heat or light) + -or (a suffix meaning 'the thing that does this').
原始詞典資料4 筆記錄
以下是外部詞典記錄的用法，摘錄並精簡格式，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
radiatornoun/ˈrædɪeɪ̯tə/
- 1
Anything which radiates or emits rays.
- 2
automotiveengineeringmechanicalA device that lowers engine coolant temperature by conducting heat to the air, through metal fins.
- The car overheated because of a broken radiator.
- 3
A finned metal fixture that carries hot water or steam in order to heat a room.
- The radiator kept the apartment warm during winter.
- Steam hissed from the old iron radiator.
- 4
businesselectrical-engineeringelectricityA type of antenna.
摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。