cu in
Definition
- Noun:
- A unit of volume: "cu in" is an abbreviation for "cubic inch." It represents the volume of a cube whose sides each measure one inch in length. This is a standard unit of measurement in the imperial and US customary systems.
Usage
- "Cu in" is used as a written abbreviation, primarily in technical, engineering, and scientific contexts to specify volume. It is less common in everyday spoken language, where "cubic inch" or "cubic inches" is used.
- It is typically placed after a numerical value.
Examples
- Noun:
- The engine has a displacement of 350 cu in. (The engine's internal volume is 350 cubic inches.)
- Please calculate the volume of the box in cu in. (Please calculate the box's volume using cubic inches as the unit.)
- One liter is approximately 61.02 cu in. (One liter is roughly equal to 61.02 cubic inches.)
Advanced Usage
- Technical Specifications: Commonly used to describe the displacement of internal combustion engines (e.g., in automobiles, motorcycles).
- The classic muscle car was powered by a 426 cu in V8 engine.
- Material Volume: Used in manufacturing and construction to specify the volume of materials or components.
- This foam packaging has a volume of 120 cu in.
Variants and Related Words
- Cubic inch (n): The full, non-abbreviated form of "cu in."
- The formula requires the volume in cubic inches.
- in³ (n): A mathematical notation equivalent to "cu in," where the superscript "3" denotes "cubic."
- The container's capacity is 50 in³.
Synonyms
- Cubic inch: The direct, unabbreviated synonym. There is no different word with an identical meaning in the imperial/US system for this specific unit.
Notes
- Conversion: One cubic inch (1 cu in) is exactly equal to approximately 16.387064 cubic centimeters (cm³) or milliliters (mL).
- Context: The abbreviation "cu in" is almost exclusively used in writing. In speech, the full term "cubic inch(es)" is always used. It is not used idiomatically or in phrasal verbs.
Noun
-
the volume equal to a cube one inch on each side
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