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How to pronounce onium

Say it like OH-nee-um. Onium has three syllables, and the main stress falls on the first one (OH).

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Click the play button next to American or British to hear how to pronounce onium. Choose Slow to hear each sound clearly.

US American/ˈoʊniəm/OH-nee-um
UK British/ˈəʊniəm/OH-nee-um
  • OH
  • nee
  • um
  • Main stress
  • Lighter stress
  • Unstressed

Onium pronunciation, sound by sound

Read the parts left to right, then blend them together without pausing.

  1. OHSay this part loudest and longest. The vowel is the "o" in go.
  2. neeKeep this part quick and light. The vowel is the "ee" in see.
  3. umKeep this part quick and light. The vowel is the relaxed "uh" in about.

American vs British pronunciation of onium

  • The long o starts further forward in British English, closer to "uh-oo" than the American "oh".

British respelling: OH-nee-um.

What does onium mean?

noun
  1. Any cation derived by the addition of a proton to the hydride of any element of the nitrogen, chalcogen or halogen families.
  2. Any organic derivative of these compounds.
noun
  1. The bound pair of a particle and its antiparticle.

Where does onium come from?

From ammonium.

Questions about saying onium

How do you pronounce onium?

Say OH-nee-um. The American pronunciation is /ˈoʊniəm/. In British English it is /ˈəʊniəm/. Press play above to hear it at normal speed or slowly.

How many syllables are in onium?

Onium has three syllables, and the main stress falls on the first one (OH). Broken into parts: OH · nee · um.

Is onium pronounced differently in British English?

Yes. The long o starts further forward in British English, closer to "uh-oo" than the American "oh". The British form is /ˈəʊniəm/ (OH-nee-um).

Pronunciation from Wiktionary; meaning and origin adapted from Wiktionary (CC BY-SA 4.0).