denier

UK: /ˈdɛniə^r/

US: (di nī′ər; Textile, Currency də nēr′ or, esp. for 1, den′yər; Fr. də nyā′)

WordReference Random House Unabridged Dictionary of American English © 2025

de•ni•er¹  (di nī′ər), n. 

1. a person who denies.

• 1350–1400; Middle English; see deny, -er¹

de•nier²  (də nēr′ or, esp. for 1, den′yər; Fr. də nyā′), n. 

1. Textiles a unit of weight indicating the fineness of fiber filaments and yarns, both silk and synthetic, and equal to a yarn weighing one gram per each 9000 meters: used esp. in indicating the fineness of women's hosiery.
2. Currency any of various coins issued in French-speaking regions, esp. a coin of France, originally of silver but later of copper, introduced in the 8th century and continued until 1794.

• Latin dēnārius denarius
• Old French
• late Middle English 1375–1425

Collins Concise English Dictionary © HarperCollins Publishers::

denier noun

1. / ˈdɛnɪˌeɪ ˈdɛnjə/ a unit of weight used to measure the fineness of silk and synthetic fibres, esp when woven into women's tights, etc. It is equal to 1 gram per 9000 metres
2. / dəˈnjeɪ -ˈnɪə/ any of several former European coins of various denominations

Etymology: 15th Century: from Old French: coin, from Latin dēnārius denarius

denier / dɪˈnaɪə/ noun

1. a person who denies