Standard Lemma guide

avoirdupois

noun · 6 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • Received-Pronunciation: /ˌævədəˈpɔɪz/
  • Received-Pronunciation: /ˌævwɑːdjuːˈpwɑː/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • US: /ˌævɚdəˈpɔɪz/
  • rhymes with -ɔɪz
  • rhymes with -ɑː

1

noun

Meaning 1

The official system of weights used in the UK between 1856 and 1963. It had been the customary system in London since 1300.

Definition source: English Wiktionary via Wiktextract

Usage: historical, uncountable, usually

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

The official system of weights used in the USA between 1866 and 1959.

Definition source: English Wiktionary via Wiktextract

Usage: historical, uncountable, usually

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

Weight; heaviness.

Definition source: English Wiktionary via Wiktextract

Usage: humorous, uncountable, usually

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

Merchandise.

Definition source: English Wiktionary via Wiktextract

Usage: obsolete, uncountable, usually

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

excess bodily weight

Definition source: Princeton WordNet 3.0

Examples

  • she disliked fatness in herself as well as in others

Meaning relationships

Synonyms: fatness, fat, blubber

Antonyms: none provided

Broader terms: bodily property

Narrower terms: adiposity, adiposeness, fattiness, abdominousness, paunchiness, greasiness, oiliness, oleaginousness, fleshiness, obesity, corpulency, steatopygia

6

noun

Meaning 6

a system of weights based on the 16-ounce pound (or 7,000 grains)

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: avoirdupois weight

Antonyms: none provided

Broader terms: system of weights, weight

History

Etymology

From Middle English avoir de pois, aver de peis, haburdy poyse, haburdepays, haburdepeyse, from Old French aveir + de + peis (“asset of weight”), influenced by Middle French avoir + du + pois; compare French poids (“weight”).

Real reading context

avoirdupois in complete knowledge articles