Definition

1. Noun:
   • A unit used to measure weight: A standard quantity used to express how heavy something is.
   • A decimal unit of weight based on the gram: A specific type of weight unit that is part of the metric system, where all units are powers of ten of the gram.

Usage

• The term "weight unit" is used in scientific, commercial, and everyday contexts to specify the standard of measurement for mass or weight.
• It is a countable noun (e.g., "two weight units").

Examples

• Noun:
  • The kilogram is a fundamental weight unit in the International System of Units.
  • When baking, it's more precise to use a weight unit like grams instead of volume measures like cups.
  • The ancient system used a weight unit called the 'talent'.

Advanced Usage

• "Derived weight unit": A unit that is defined in terms of a base unit.
  • The newton is a derived weight unit for force, based on kilograms, meters, and seconds.
• "Customary weight unit": A unit traditionally used in a specific country or system, not part of the metric system.
  • The pound is a customary weight unit still commonly used in the United States.

Variants and Related Words

• Unit of weight: A synonymous phrase for "weight unit".
• Mass unit: In scientific contexts, "mass" is the preferred term over "weight," making "mass unit" a more precise related term.
  • In physics, the kilogram is strictly a mass unit.
• Metric weight unit: A weight unit belonging to the metric system (e.g., gram, kilogram, milligram).
• Avoirdupois unit: A system of weight units (e.g., ounce, pound) used in some English-speaking countries for general goods.

Synonyms

• Unit of measurement for weight: A more descriptive synonym.
• Measure of weight: A common alternative phrase.

Related Phrases

• System of weight units: A complete set of related units for measuring weight.
  • The imperial and metric systems are different systems of weight units.
• Convert between weight units: To change an expression of weight from one unit to another.
  • You need to know the ratio to convert between weight units like pounds and kilograms.

Notes

• In precise scientific language, "mass" (the amount of matter) and "weight" (the force of gravity on that mass) are distinct. Therefore, "mass unit" is technically more accurate, though "weight unit" is widely used in everyday contexts.
• The reference definition mentions "a decimal unit of weight based on the gram," which specifically refers to metric units like the gram, kilogram, and milligram.

Noun

1. a unit used to measure weight
   • he placed two weights in the scale pan
2. a decimal unit of weight based on the gram