avoirdupois
Upper-Intermediate (B2)
IPA: /ˌævərdəˈpwɑ/
KK: /ˌævərdəˈpwɑ/
adjective
Definition
Relating to a system of weight based on a pound of 16 ounces, commonly used in the United States and other countries for measuring weight.
Example
The package was measured in avoirdupois weight to ensure it met shipping requirements.
Conversation
Did you know that the package is measured in avoirdupois weight?
Really? I thought all weights were the same.
Nope! Avoirdupois is different from other systems like metric.
That's interesting! I should pay more attention to these details.
Synonyms & Antonyms
Synonyms
weighty
heavy
substantial
Antonyms
light
insignificant
slight
noun
Definition
A system of weight measurement used in the United States and other countries, based on a pound of 16 ounces.
Example
The package weighed five pounds in avoirdupois.
Conversation
Have you ever thought about the avoirdupois system when weighing things?
Not really, I usually just go by how heavy it feels.
Yeah, but it can be interesting to know the actual avoirdupois weight of items.
Root Explanation
Avoirdupois → The word comes from Old French 'aveir de pois' (meaning goods of weight). It originally referred to a system of weights used for trade, particularly for goods that were heavy.
Memory Tip
Think of 'goods of weight' in Old French, which helps you remember that 'avoirdupois' relates to a system of measuring weight.
Visually Confused Words
No commonly confused words.