API donut en · NOUN
Pronunciation
- /ˌeɪpiaɪ ˈdoʊ(ˌ)nʌt/ (General-American)
- /ˌeɪpiːaɪ ˈdəʊnʌt/ (Received-Pronunciation)
Etymology
From API + donut; from American Petroleum Institute, and its shape.
Meanings
- (US) An information table found on cans of motor oil, conforming to U.S. standards, which indicates the weight (viscosity) and type of oil. The central circle provides the oil viscosity rating (ie. 10W50), while the upper annulus section provides the oil type (ie. SP).
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| API donuts | Number=Plur | lexicographic |